gen NoHSDegree=1 if grdatn<38
replace NoHSDegree=0 if NoHSDegree~=1

gen HSDegree=1 if grdatn==39
replace HSDegree=0 if HSDegree~=1

gen SomeColl=1 if grdatn==40
replace SomeColl=0 if SomeColl~=1

gen AADegree=1 if grdatn>40 & grdatn<43
replace AADegree=0 if AADegree~=1

gen BSDegree=1 if grdatn==43
replace BSDegree=0 if BSDegree~=1

gen MSDegree=1 if grdatn==44
replace MSDegree=0 if MSDegree~=1

gen ProfDegree=1 if grdatn==45
replace ProfDegree=0 if ProfDegree~=1

gen DocDegree=1 if grdatn==46
replace DocDegree=0 if DocDegree~=1