Samuel initially attended Riverdale Baptist at Upper Marlboro, Maryland where he won a Maryland state championship. Afterwards, he transferred to Orangeville Prep at Orangeville, Ontario where he averaged 15 points, eight rebounds, three assists, three steals and one block as a senior seasonhelping the team finish with a 19–2, the third best in the country.[3][4]
In his last year, at Florida, Samuel played 36 games and averaged 13.9 points, 7.4 rebounds, 1.9 assists, 1.1 steals and 1.1 blocks while shooting 56.4% from the field while having three 20-point games and 11 double-doubles, which tied for the ninth-most in a single season in the program's history.[4][5]