test_data/batches.csv

id,name,course_id,mentor_id,start_date,status
batch-ss-b1,SS-B1 (Sun),course-softskill,mentor-ss1,2026-04-19,Active
batch-dsa-wd-b1,DSA-WD-B1 (Tue-Fri),course-dsa,mentor-dsa1,2026-04-14,Active
batch-dsa-wd-b2,DSA-WD-B2 (Tue-Fri),course-dsa,mentor-dsa1,2026-04-14,Active
batch-dsa-we-b1,DSA-WE-B1 (Sat-Sun),course-dsa,mentor-dsa2,2026-04-18,Active
batch-dsa-we-b2,DSA-WE-B2 (Sat-Sun),course-dsa,mentor-dsa2,2026-04-18,Active
batch-da-wd-b1,DA-WD-B1 (Mon-Fri),course-data-analytics,mentor-da1,2026-04-14,Active
batch-da-we-b1,DA-WE-B1 (Sat-Sun),course-data-analytics,mentor-da2,2026-04-18,Active
batch-sd-wd-b1,SD-WD-B1 (Mon-Fri),course-system-design,mentor-sd1,2026-04-14,Active
batch-sd-wd-b2,SD-WD-B2 (Mon-Fri),course-system-design,mentor-sd1,2026-04-14,Active
batch-sd-we-b1,SD-WE-B1 (Sat-Sun),course-system-design,mentor-sd2,2026-04-18,Active
batch-sd-we-b2,SD-WE-B2 (Sat-Sun),course-system-design,mentor-sd2,2026-04-18,Active
batch-aiml-we-b1,AIML-WE-B1 (Sat-Sun),course-aiml,mentor-aiml1,2026-04-18,Active
batch-aiml-we-b2,AIML-WE-B2 (Sat-Sun),course-aiml,mentor-aiml2,2026-04-18,Active
batch-att-completed,"ATT-Completed (backdated, DSA)",course-dsa,mentor-dsa1,2026-01-06,Completed
batch-att-active,ATT-Active (attendance history),course-data-analytics,mentor-da1,2026-03-01,Active