pythonの実行時のエラー

pythonで辞書とファイル入力を使ったプログラムを作っています。macで「python3　ii.py」と実行したところエラーが出ました。

##発生している問題・エラーメッセージ　

Traceback (most recent call last):
  File "ii.py", line 31, in <module>
    if total >= excellent:
TypeError: '>=' not supported between instances of 'tuple' and 'int'

該当のソースコード

# -*- coding: utf-8 -*-
open_file = open('point.txt')
raw_data = open_file.read()
open_file.close()
point_data = raw_data.splitlines()

point_dict = {}
for line in point_data:
    student_name, points_str = line.split(':')
    point_dict[student_name] = points_str

score_dict = {}
for student_name in point_dict:
    point_list = point_dict[student_name].split(',')
    subject_number = len(point_list)
    total = 0
    for point in point_list:
        total = total + int(point)
    average = total / subject_number
    score_dict[student_name] = (total, average, subject_number)

evaluation_dict = {}
for student_name in score_dict:
    score_data = score_dict[student_name]
    total = score_data
    average = score_data[1]
    subject_number = score_data[2]

    excellent = subject_number * 80
    good = subject_number * 0.65
    if total >= excellent:
        evaluation = 'Excellent'
    if total >= good:
        evaluation = 'Good'
    else:
            evaluation = 'Bad'    
    evaluation_dict[student_name] = evaluation

file_name = 'evaluation.txt'
output_file = open(file_name, 'w')
for student_name in score_dict:
    score_data = score_dict[student_name]
    total = score_data[0]

    evaluation = evaluation_dict[student_name]

    text = '[{}] total: {}, evaluation: {}\n'.format(student_name, total, evaluation)
    output_file.write(text)

output_file.close()
print('評価結果を{}に出力しました'.format(file_name))