This is a subset of the NOTI Coding Education Dataset filtered by difficulty = Hard.
problem_title: Problem identifier
student_id: Student identifier (anonymized)
code: Submitted code
grader_id: Grader identifier
score: Human grading score (0-10)
grading_details: Detailed grading feedback… See the full description on the dataset page:
https://huggingface.co/datasets/K-University-AIED/hallym_coding_hard.