Yes, there is a more elegant way to count the number of correct answers for each student. You can use the SUMPRODUCT function to compare the student's answers to the key row and count the number of matches.

1. In cell L1, enter the label "Score" to indicate that this column will contain the number of correct answers for each student.
2. In cell L2, enter the following formula:
   
   
   Formula:

   =SUMPRODUCT(--(B2:K2=B1:K1)) 

   This formula compares the student's answers in cells B2:K2 to the key row in cells B1:K1. The double negative (--) converts the TRUE/FALSE values to 1/0 values, and the SUMPRODUCT function adds up the 1's to count the number of correct answers.
3. Copy the formula in cell L2 and paste it into the cells in column L for all the other students.

Now you have a column that shows the number of correct answers for each student. You can use this column to calculate each student's percentage score by dividing their score by the total number of questions and multiplying by 100. For example, if there are 10 questions, you can enter the following formula in cell M2:

This formula divides the student's score in cell L2 by 10 (the total number of questions) and multiplies by 100 to get the percentage score. Copy the formula in cell M2 and paste it into the cells in column M for all the other students.