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She's very knowledgeable and nice, and her lectures are good. Quizzes and assignments aren't too difficult. I'm not AOS major but I still liked her class.","source_url":"https://www.ratemyprofessors.com/professor/1248548","quality_rating":5,"difficulty_rating":2},{"observed_at":"2026-09-07 16:55:40.524523+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTQyNDQ0MzMx","source_instructor_id":"rmp:1248548","instructor_name":"Andrea Lang","course_label":"AOS100","course_id":null,"course_uid":null,"review_date":"2026-01-06 03:56:57 +0000 UTC","comment":"As long as you attend the lectures, it will be easy to receive a good grade. Many assignments outside of tests help you get a good grade. The professor is a nice person. 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TAs grade harshly, slowly, nonconstructively.","source_url":"https://www.ratemyprofessors.com/professor/1248548","quality_rating":2,"difficulty_rating":4},{"observed_at":"2026-09-07 16:55:40.524523+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTQxNDgxNjI0","source_instructor_id":"rmp:1248548","instructor_name":"Andrea Lang","course_label":"AOS220","course_id":null,"course_uid":null,"review_date":"2025-07-04 17:24:31 +0000 UTC","comment":"Great prof","source_url":"https://www.ratemyprofessors.com/professor/1248548","quality_rating":5,"difficulty_rating":5},{"observed_at":"2026-09-07 16:55:40.524523+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTQxMDkxMzQ1","source_instructor_id":"rmp:1248548","instructor_name":"Andrea Lang","course_label":"AOS100","course_id":null,"course_uid":null,"review_date":"2025-04-29 21:39:26 +0000 UTC","comment":"Prof. Lang was amazing when I took her (Fall 2024)! Good lectures, and tests were almost all from the slides. Never bought or read the book and got an A. Seems to genuinely care about her students and is passionate. Here lectures are most certainly not boring. I would recommend taking her, but this class isn't easy if you're looking for an easy A.","source_url":"https://www.ratemyprofessors.com/professor/1248548","quality_rating":5,"difficulty_rating":3},{"observed_at":"2026-09-07 16:55:40.524523+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTQwNjE0NDYz","source_instructor_id":"rmp:1248548","instructor_name":"Andrea Lang","course_label":"AOS100","course_id":null,"course_uid":null,"review_date":"2025-01-28 21:33:14 +0000 UTC","comment":"Great lecturer and knew what she was talking about! Tests were online and lecture covered everything. Homework was pretty challenging as it was worth less than 10 points, so a couple points off meant a bad grade. 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