The pie graph for the data is shown below. Based on the graph, most parents graded their kid's schools with A or B with A $35\%$ and B $44\%$. Only $1\%$ of the parents graded F with C $15\%$ and D $5%$.
Work Step by Step
Take the sum of all the numbers, divide each number with this total to get percentages of each grade. Draw the pie graph as shown above.