No, they count no differently because of the fact that they are Juco, Prep, or HS. What is the determining factor is WHEN THEY ENROLL & ENTER. An EE, entering mid-year, may count against either the previous, or next class --- at the election of the institution.
Obviously, any school that did not enroll their max permitted number the previous year, would count an EE back! However, if they had enrolled (not 'signed' -- ENROLLED), the max number, or were at the 85 maximun cap, they would elect to count him against the following class.