AbstractThis survey research aims to assess the collegiate instrumental teachers’ ability to estimate students’ practice habits in the practice room based on the students’ performance during the instrumental lesson and to collect collegiate instrumental teachers’ suggestions on estimating students’ practice habits in the practice room. A questionnaire in two forms was designed for 15 collegiate instrumental teachers and 30 music performance undergraduate students who were selected through a convenience sampling approach. The percent agreement (PA) and Cohen’s kappa ( ) were utilised to examine the inter-rater reliability between the results of both participants on the practice habits that focus on the practice time, practice sessions, goal setting, focused attention, mental practice, technique practice, metronome practice, practise with an electronic tuner, and practise with other practice strategies. The low average results, 31.50% on the percent agreement and .0437 on the Cohenâ€.....