<p>My D applied to 5 schools, all large state flagships. She wanted a large school with Division 1 sports and a wide variety of programs. Application fees ranged from $40 to $55, IIRC. Then there was the cost of sending test scores on top of that. Her HS didn’t charge for transcripts until you exceeded 10 or so. She was able to keep the number down (and actually could have applied to fewer schools) because she had a good idea of what she wanted, they were all safeties or matches so she was likely to be (and was) accepted to all, and financial aid wasn’t an issue. </p>
<p>Her friends who were applying to more prestigious schools or who needed financial aid needed to cast a much wider net. Most of them applied to anywhere from 10 to 15 schools, although some applied to even more.</p>