iiinova — where your digital self keeps evolving

Reposted by Zach Weingarten

NBER @nber.org · 06/11/2025

Do PGS capture genetic endowments? Using a latent genetic measure, combining SNPs with ADHD symptoms, parents compensate for kids’ ADHD risk. PGS estimates flip the story, from Francesco Agostinelli and Zach Weingarten www.nber.org/papers/w34427

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Zach Weingarten @zachweingarten.bsky.social · 20/06/2025

I'll be presenting my job market paper at SOLE/World Labor Conference in Toronto next week (session 101 — "School Quality") If you'll be there and want to connect over lunch/dinner/drinks, feel free to reach out!

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Reposted by Zach Weingarten

Ludger Woessmann @woessmann.bsky.social · 09/05/2025

👇 See the program of our 📢 3rd CESifo/ifo Junior Workshop on the Economics of Education 🚀 Starting on Monday! Keynotes: Alexander Willén & @alexeble.bsky.social What a tough choice from 160 submissions www.ifo.de/en/cesifo/ev... @caterinapavese.bsky.social @cesifo.org @ifoeducation.bsky.social

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Zach Weingarten @zachweingarten.bsky.social · 12/03/2025

I’ll be presenting (a quick version of) my JMP “High School Admissions Policies in Equilibrium” at #AEFP in Session 6.06 We quantify the equity & efficiency trade-offs of abolishing screened admissions & develop an optimal design to minimize this trade-off Looking forward to seeing everyone in DC!

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Zach Weingarten @zachweingarten.bsky.social · 17/01/2025

If you’re in the mood for new music, my friend and I do a year-end write-up (with accompanying playlist) each year: zach-weingarten.medium.com/50-favorite-...

zach-weingarten.medium.com

50 Favorite Music Releases of 2024

Written by Tucker Pennington & Zach Weingarten

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Zach Weingarten @zachweingarten.bsky.social · 03/12/2024

We adopted her as soon as we saw those socks ☺️

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Zach Weingarten @zachweingarten.bsky.social · 20/11/2024

100 education economists are now currently browsing the Texas restricted data access website

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Zach Weingarten @zachweingarten.bsky.social · 11/11/2024

Banking this for the market next year

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

14/14 thanks for reading! Feel free to reach out to Brooks, Vivi, or myself with any feedback!

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

13/ above all, this paper highlights the importance of policy design and the subsequent response of students. At face value, lowering standards may seem like a good solution to combat achievement gaps, but theoretically and empirically we find evidence on the contrary.

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

12/ we conduct a battery of robustness checks and show that our main results are not driven by confounding age effects, as is common when using a birthday RD. We also rule out several other mechanisms like sensitive RD specifications and changes in education inputs.

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

11/ we look at longer-run outcomes and find little movement except on compulsory ACT scores, which have a (-) effect for our low ability group. Our placebo analysis shows no differences in ACT b/w the groups, suggesting the policy caused deficits in the low group’s performance

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

10/ Across high school, these differences compound and begin to widen, but the differences between ability groups persists - ie, low ability students never experience positive GPA gains in response to this policy

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

9/ receiving the highest bumps in GPA, but the null effect suggests an equally large, negative effect in effort that counteracts this. The null effect on high ability students’ test scores further points to their gains being purely mechanical.

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

8/ when we look at these outcomes for “high” and “low” ability students, we see gains for high ability students only and reductions in engagement for low ability students only. We also conduct a simple simulation that suggests low ability students SHOULD be mechanically

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

7/ we estimate LATEs under a fuzzy RDD with an “honest” RD framework to account for the fact that our running variable is discrete. Overall, we find substantial gains in GPA but potentially larger negative effects on engagement (absences)

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

6/ rather than compare the 2 cohorts directly, we instrument for HS entry using a separate kindergarten entry rule used by the state. This addresses issues of non-compliance at the 9th grade entry level, as evident by the figure. We then use a fuzzy RD to estimate effects

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

5/ we want to understand the effect of the policy, & we want to exploit the timing of it on the first cohort of high schoolers facing it; however, the transition from 8th to 9th grade is the second large point of retention for students in K-12, so there’s selection on entry year

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

4/ you can see that the unnatural bunching patterns immediately shift in response to the policy. We don’t make a claim about the mechanisms, but this at least suggests that schools (teachers or students or both) are keenly aware of the change and respond to it

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

3/ the immediate response to the policy is stark, even descriptively. The top panel shows 9th grade course averages in math during the last year of the 7-point scale, and the bottom panel shows the same during the first year of the “lenient” scale

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

2/ this is the policy in question. Effectively the state moved from a 7-point grading scale to a 10-point scale for all classes. You can see that earning an A became 3 points “easier” but passing a class became 10 points easier.

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

1/ we first develop a theoretical model to explain how students may respond to a policy that lowers grade standards. We show that this has the capacity to WIDEN or MITIGATE achievement gaps, which depends on the distribution of student ability & the magnitude of the leniency

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

In the long-run, these effects compound and eventually result in widening achievement gaps as measured by ACT scores. Detailed thread below:

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

In particular, high ability students (as measured by 8th grade math scores) drive the entirety of the GPA gains while low ability students drive the entirety of the reduction in engagement, as measured by absences.

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

TLDR: empirical evidence shows immediate (mechanical) gains in GPA that coincide with increases in number of days absent & large increases in chronic absence. These effects are driven by heterogeneous responses to the policy on the basis of ability.

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Zach Weingarten @zachweingarten.bsky.social · 04/10/2023

🚨 New WP 🚨 Joint with Brooks Bowden & Viviana Rodriguez, we analyze the impacts of a policy that explicitly lowered grading standards in high school for all students. Full version here: www.edworkingpapers.org/sites/defaul... Thread below

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Zach Weingarten @zachweingarten.bsky.social · 03/10/2023

Thanks for the kind words!! Hoping to do a thread on the paper here (and the other place) in the coming days!

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Zach Weingarten @zachweingarten.bsky.social · 22/09/2023

perfect thank you just logged in feels good to be a part of this group

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Zach Weingarten @zachweingarten.bsky.social · 21/09/2023

The “Popular with Friends” tab is mostly a @khoavuumn.bsky.social highlight reel so I’d say this app is working as intended so far

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Zach Weingarten @zachweingarten.bsky.social · 20/09/2023

hm submission ID 5 I may have jumped the gun on this AEFP submission

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