Textbooks

revision
(study guides for memorization, problem books for problem solving)
(always get the solutions manual)

High School:
APUSH:
AP * History Crash Course (REA)
John J. Newman and John M. Schmalbach
APBIO: Cliffnotes

US Government: KJK
Calculus, HS: Larson
Calculus, college: Apostal or Spivak
[Get REA or Schaums's solved problems]
Differential Equations:
[Get Tennenbaum]

General Physics, college - Giancoli, Young, or Halliday
[Get REA or Schaums's solved problems]
Modern Physics - Tipler

General Chemistry, HS - Silberberg
General Chemistry, college - Atkins, Zumdahl, or Oxtoby
General Biology: Campbell
Organic Lab: Mohrig
Organic Chemistry: David Klein
Physical Chemistry: Levin

Statistics, HS: Freedman
Statistics, College: E.P.Box, Hunter, Hunter
Statistics, Bayesian: Bayesian Computation With R
Physics Lab, Statistics: Error Analysis
Programming C, HS - Kochan or A Book on C
Programming C, college - K&R

Accounting: Kieso
Economics: Mankiw
European History: Spielvogel + Schaum's notes
English Lang: Joseph Williams
Mandarin: Chih-p'ing Chou: Oh, China!

[From a Graduate Student]
World Politics: Baylis, Smith, Owens
American Politics: Lowi or KJK
Canadian Politics: Malcomson and Meyers
European Politics: Hay and Menon
British Politics: Judge