Revised education indicators; wrote a modification to test T2 to check it. Need to modify T1
Dealing with natl_curriculum = NA, adding tests
missed na.rm
Merge branch '198_number_of_schools' of github.com:sel-columbia/nmis into 198_number_of_schools
Merge pull request #199 from SEL-Columbia/198_number_of_schools

198 number of schools