Swat lost affiliation with Hillel so it’d be interesting to see. Not sure the why but you can google.
Each school wil have a Hillel or other. You might reach out. Most will have an ambassador and be very honest.
Hillel has a guide where you can see populations and % of total population as Jewish. I wouldn’t trust it but it’s likely directionally ok.
Part of the issue is - many may be Jewish but don’t engage in the community etc.