John Fallon

@john-fallon-econ.com

383 Followers 1428 Following

BU Econ PhD candidate. Labor, Education. www.john-fallon-econ.com

Graph showing difference-in-differences estimates by partner experience bins from 0-5 years through 20+ years. The bars show near-zero effects for less experienced partners, peaking at approximately 0.05-0.06 standard deviations for partners with 15-20 years experience, then declining slightly.
Heatmap showing pairing frequency by experience levels of both teachers. Yellow indicates most frequent pairings, blue indicates less common. The brightest yellow cell shows inexperienced teachers (0-5 years) paired together most frequently, with cooler blue tones for pairings involving more experienced teachers.
Graph showing two series of coefficients plotting student test scores against years as a pair. Blue line without teacher experience controls shows slight upward trend. Red line with teacher experience controls shows flat or slightly negative relationship, indicating pairs don't improve together over time and may have opportunity costs.
Three theoretical curves showing different possible trajectories of teacher productivity over career experience: Profile A shows rapid early growth then complete flattening after year 10, Profile B shows continuous but diminishing returns throughout career, and Profile C shows early growth followed by late-career decline.
Event study graph with three panels showing effects by special education partner experience level (0-7, 8-15, and 16+ years). Only the 16+ years panel shows clear positive effects after co-teaching, reaching approximately 0.10 standard deviations improvement.
Graph showing probability of co-teaching pair separation by years together. Starting above 60% after one year, the separation rate gradually declines to approximately 40% by year five, indicating most pairs break up quickly.
Graph showing hazard rates for entering co-teaching by years of experience. Two lines compare special education teachers (higher rate, peaking around 25% for novices) versus general education teachers (lower rate, around 10% for novices), both declining sharply with experience.
Event study graph showing student test score differences before and after teachers first co-teach. The line shows parallel pre-trends near zero, then jumps to approximately 0.04 standard deviations above zero in years following co-teaching, with confidence intervals shown blue bars.
Geographic maps of practitioner distribution
Charts showing policies under different decision mechanisms and the associated theoretical welfare
Theoretical best response graph for chiropractor boards
An example of the IV strategy
Event study showing a decline in MD prevalence after the adoption of a chiropractic board
Event study showing pass rate declines
Event study showing internship requirement increases
1921 chiropractor ad claiming to treat influenza
Line graph showing cumulative state adoption of chiropractic boards over time
Presentation slide with main results