No, your science teacher is correct. The standard convention for measuring time is based on a 24-hour day, 60 minutes per hour, and 60 seconds per minute. This system of timekeeping is widely used and accepted globally.
While there are alternative ways of measuring time in different contexts, such as using decimal time or different base systems, the 24-hour day with 60 minutes and 60 seconds per unit is the widely recognized and utilized standard.
It's important to understand and use this conventional system of time measurement for effective communication and coordination with others.