WITHOUT a doubt, you'll remember at least one. Hopefully, for all the right reasons.
Next to your parents, your teachers must count among the most influential people in your life. As a student, you see more of them than you do of virtually anyone else, so hopefully that time shared was valuable and formative.
Yesterday was World Teachers' Day (in Australia at least - globally, it's celebrated on October 5 but is shifted later in the month to accommodate school holidays), a day intended to recognise and acknowledge the contributions teachers make to our society.
What does it take to be a teacher?
Primary school teacher Dan Moody - who teaches Year 3 and 4 at East Brisbane State School - said aspiring teachers must be highly organised, and must realise that 12 weeks of school holidays doesn't mean 12 weeks of no work.
"There is a simple joy that comes from implementing a classroom lesson, however before and after school there is planning to be done, reports to complete and maybe a school dance to chaperone," he said.
"Best laid plans can be interrupted at short notice and a teacher needs to be able to respond quickly and confidently to meet any challenge.
"A love of learning is something that can spread through a classroom like wildfire.
"When the students can see you are interested in what you're teaching, it doesn't take long for them to develop the same fascination."
Dan said the rewards far outweighed the challenges.
"It is amazing when a student takes the initiative to approach me at lunch time and ask me a question about the lesson I have just taught," he said.
"It is not only through improved assessment results that a difference is made. To see a student's thirst for learning develop will make a difference to their entire life."
To learn more about the qualifications required to work as a teacher in Queensland, visit the Department of Education, Training and Employment website at education.qld.gov.au/hr.