students = [["Alice",   [5, 4, 4, 5]],["Bob",     [3, 4, 4, 3]],["Charlie", [5, 5, 5, 4]]]

c=[]
for student in range(len(students)):
    c.append(sum(students[student][1])/len(students[student][1]))
print('Максимальный балл: ',students[c.index(max(c))][0],'',max(c))