Hi,

I am performing propensity score matching using the "psmatch2" command (and, in particular, using the "mahalanobis" option).
The observations are highschool students, and I would like the matching to be limited to students from the same school, while still running the command for all the observations.

Is there a way to do this? I did not find any option that seemed to enable this.

For convenience, this is the help page for the psmatch2 command: http://repec.org/bocode/p/psmatch2.html

Thanks!