When 700 students from Genius M.S. played SCOOZ, 90$\%$ of them scored ''proficient or above.'' What number of students at Genius M.S. did not score ''proficient or above?''
If $90\%$ scored proficient or above, that means $10\%$ did not, and $10\%$ of 700 is $\frac{1}{10}\times 700 = \boxed{70}$ students.