Hi, University of California Santacruz had 165 GRE score for Quantitative. So, check before applying. All three universities have 6.5 for IELTS. QS ranking of Pittsburg is 163, university of Illinois Chicago is 285,  University of California Santacruz - 347.

Tuition fees for Pittsburg is $30000 Cost of Living $13500

university of Illinois Chicago Tuition $26500 Cost of Living $10900

University of California Santacruz Tuition $57984 Cost of Living $16449

Hope this helps.