
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Determine the average student headcount for the spring terms of the `02-`03, `03-`04, `04-`05, and `05-`06 academic years. Additionally, calculate the percentage change in student headcount from spring `02-`03 to spring `05-`06.

For the following years:
- '02-'03: 10,000 students in Spring,
- '03-'04: 11,000 students in Spring,
- '04-'05: 9,500 students in Spring,
- '05-'06: 10,500 students in Spring.

Present the answer in LaTex format: \boxed{Your answer}
user