After 12th,  there are 2 ways to get the HRM degree. One is directly after 12th you can apply for integrated management exam like IPMAT (conducted by IIM Indore) which is a 5 year management program- BBA+MBA.



Other way is first complete your graduation with good percentage and then appear for management entrances like CAT, MAT, XAT,CMAT etc..



Some of the good colleges for HR specialization are:

XLRI

MDI

XIMB

IIM Ranchi

XISS

UBS Panjab university



So you can try both the ways and get into the best one.



You can check IPMAT criteria below, if interested:

IPMAT-All about!



Good Luck.