<image>All 320 students in the third grade of a certain school took an exam of the same difficulty level before and after computer training. The exam scores were divided into three categories: "Fail," "Pass," and "Excellent." To evaluate the effect of the computer training, 64 students were randomly selected through a lottery method, and their exam scores from both tests were used to create a statistical chart as shown in . Based on the information in the chart, please answer the following questions:
(1) The median score category of these 64 students before the training is ____; the mode score category after the training is ____.
(2) Please estimate the number of students with an "Excellent" score category in the entire third grade after the training.