How do you sa wiscers in Japanese?

I'm not sure exactly what 'wiscers' mean, however it can be written and read like this in Japanese (as an inserted Word) : ウィスカース /wi su kaa su/.

If you mean WISC'ers like participants in WISC IQ test probably, you can say

ウィスク知能テスト参åŠã®è€… /wi su ku chi nou te su to no san ka sha/ (lit: entrant(s)/participant(s) of the WISC intelligence test).