[Tutor] New to Python, Already Confused

[Gampper, Terry]

Hello
I started my journey with Python last week and find it to be an easy-to-learn language. I am currently teaching introduction to computer programming. One of the assignments we are working on involves an instructor giving a series of 5 tests, and the lowest score is dropped, then calculating the percent. Here is my attempt at coding:

name = input("Enter Student's Name: " )
tscore1 = input ("Enter test score 1: ")
tscore2 = input ("Enter test score 2: ")
tscore3 = input ("Enter test score 3: ")
tscore4 = input ("Enter test score 4: ")
tscore5 = input ("Enter test score 5: ")
total_tscore = int(tscore1) + int(tscore2) + int(tscore3) + int(tscore4) + int(tscore5)
low_tscore = min(tscore1,tscore2,tscore3,tscore4,tscore5)
adjusted_tscore = int(total_tscore) - int(low_tscore)
percent = int(adjusted_tscore/400*100)
print("The sum of the 5 tests is",total_tscore)
print("The lowest test score is thrown out",low_tscore)
print("The adjusted score is",adjusted_tscore)
print("Student",name, "has a score of",percent, "percent")

I ran the program several times using random numbers and I found that the results were not consistent. Here are a couple of runs:

============ RESTART: /Users/tgampper/Documents/Python/assign2.py ============
Enter Student's Name: Joe
Enter test score 1: 78
Enter test score 2: 89
Enter test score 3: 90
Enter test score 4: 78
Enter test score 5: 99
The sum of the 5 tests is 434
The lowest test score is thrown out 78
The adjusted score is 356
Student Joe has a score of 89 percent
>>>
============ RESTART: /Users/tgampper/Documents/Python/assign2.py ============
Enter Student's Name: Sally
Enter test score 1: 78
Enter test score 2: 89
Enter test score 3: 90
Enter test score 4: 78
Enter test score 5: 100
The sum of the 5 tests is 435
The lowest test score is thrown out 100
The adjusted score is 335
Student Sally has a score of 83 percent
>>>

Notice the scores for test 5 for each student. My conclusion is that if the score is <100, the lowest score is properly displayed, but if the score is >=100, then the lowest score is equal to the highest score. Doesn't make sense to me. Do you have any ideas? Thanks!
--
Terry Gampper
Adjunct INFO Instructor
Metropolitan Community College, Omaha NE