Appendix Table 1.

Coding of Educational Attainment for each Specification

Specification 1	Semi-Parametric
Specification 2	Continuous (ed)
Step changes with zero slopes
Specification 3	lths +hs, sc +co
Specification 4	lths, hs, sc +co
Specification 5	lths, hs + sc, co
Specification 6	lths, hs, sc, co
Step changes with constant, nonzero slopes
Specification 7	ed, lths +hs, sc +co
Specification 8	ed, lths, hs, sc +co
Specification 9	ed, lths, hs + sc, co
Specification 10	ed, lths, hs, sc, co
Step changes with varying slopes
Specification 11	ed, lths +hs, sc +co, ed x (lths +hs), ed x (sc +co)
Specification 12	ed, lths, hs +co, ed x lths, ed x (hs +sc), ed x co
Specification 13	ed, lths, ed x lths

Notes: ed = continuous educational attainment. lths = less than high school. hs = high school.

sc = some college. co = College. X denotes an interaction.