The ATCAS application requests the below information:

Official transcripts of all academic work attempted.
Two letters of recommendation attesting to the potential for success as an athletic trainer and/or the scholarly potential of the applicant,
At least one letter must be from a BOC (Board of Certification for the Athletic Trainer) certified athletic trainer with whom the applicant has had a professional association.
One letter must be from a professor for a prerequisite course which the applicant completed, or from an employer, or whomever the applicant has had a professional association.
Documentation of knowledge of athletic training through a minimum of 150 documented hours of volunteer experience under the direct supervision of a BOC certified athletic trainer.
Written statement of purpose reflecting the applicant's commitment to athletic training.
Prerequisite requirements. All courses (prerequisite and overall) must be taken from an accredited institution.
Technical Standards Policy
Hold, or be eligible to hold, an acceptable baccalaureate degree from an institution accredited by a regional accrediting association or have completed equivalent academic preparation as determined by an appropriate campus authority, by the end of the spring semester prior to admission to the program.

Have attained a cumulative grade point average of at least 3.00 (A=4.00).

Have been in good academic, professional, and clinical standing at the last institution and if applicable in the last entry-level athletic training educational program attended.

Have successfully completed the prerequisite courses with a minimum of C and a minimum cumulative grade point average of 3.00 by the end of the fall semester prior to the year of admission to the program. No course may be repeated more than once and no more than 3 prerequisite courses may be repeated. CR/NC grades, correspondence courses, or independent study courses cannot be used for prerequisite requirements.

Have completed a minimum of 150 documented hours of volunteer experience under the direct supervision of a BOC certified athletic trainer. It is highly encouraged for students to gain experience in a variety of different clinical settings.

IELTS - 6.5
TOEFL Internet-based (iBT) - 80
TOEFL Paper-based - 550