Scholarship dollars are basically totaled 2-ways. The schools and coaches usually track them by the overall dollar amount. Meaning that you multiple the total cost of going to school (tuition, meal plan, room and board, and books) by the amount of scholarships your school or the NCAA offers (in some cases schools are fully funded and have less than the alloted scholarship amount to give).
Example
School Cost=25,000 a year
Scholarships available=9.9
Total Scholarship fund=$247,500
The $247,500 is then given out in smaller increments to members of the team. Each school and program does it differently but usually the higher targeted recruits get more, and the less targeted get less money. Each year the amount of money available in the total scholarship fund fluctuates based on kids graduating or leaving the program, increasing kids scholarship, and new recruits.

The NCAA and compliance offices at school also track it by scholarship percent. Meaning if a full scholarship is worth $25,000 and a kid gets a $12,500 scholarship he is a 50% or .5 on the scale. Another kids gets $20,000 scholarship and he is 80% or .8. Between those kids they have used 1.3 of 9.9