How to Write the 10 Common App Activities Section Entries: 150-Character Descriptions + Ordering Strategy

Published on May 14, 2026

Every November, the parent question I hear most often is: "Teacher, my son has done so many things. They won't fit into 10 entries. What should we do?"

My answer is always: "First list every activity on one sheet of paper, then cut it down to 10 based on the logic of the story you are telling the AO. The 10 entries are not for 'including everything you have done.' They are for 'using 10 activities to show who you are.'"

Parents get even more anxious: "Then how do we decide which 10? How do we order them?"

The answer is: choosing and ordering the 10 activities is narrative engineering. It is not resume writing. This article uses my 15 years of hands-on experience to break down the strategy behind these 10 entries.

1. The Real Weight of the Activities Section

How important is the Common App Activities Section in an AO's mind?

The truth: In an 8-minute application read, an AO spends 90 seconds on the Activities Section, 4 minutes on the PS, and the remaining 2.5 minutes on everything else. Activities are the "factual evidence"; the PS is the "narrative frame." The two must match.

2. The Structure of the 10 Entries

Each Activity entry includes the following fields:

Note: The 150-character limit means characters, not words. It includes spaces and punctuation, so in English it is roughly 30-40 words.

3. Ordering Principles for the 10 Entries

The biggest ordering myth: "Put them in chronological order." Wrong.

Correct ordering: By importance to the story you are telling the AO.

3.1 Iron Rules for Ordering

1. Entry 1 = your strongest activity: the one most directly related to your spike / intended major
2. Entries 2-3 = supporting activities connected to Entry 1: they create spike triangulation
3. Entries 4-6 = leadership and depth activities: clubs, competitions, research
4. Entries 7-8 = interests and personality activities: music, sports, art
5. Entries 9-10 = continuity / service activities: volunteering, family responsibilities, religion

3.2 Typical Ordering Example (CS Spike Student)

Key point: Activities ranked 1-3 should point 100% toward the CS spike. Activities ranked 4-7 prove you are multidimensional + a leader + service-minded. Activities ranked 8-10 prove you are a real human being with texture.

4. How to Write the 150-Character Description

The 150-character description is the main battlefield of the Activities Section.

4.1 Start with an Action Verb

Start every description with a strong action verb. Do not use a subject (you/I).

Wrong:

I am the founder of robotics club and I lead 30 members and organize meetings. (130 characters)

Right:

Founded robotics club, leading 30 members, organizing weekly meetings, securing $5K grant, mentoring 8 underclassmen in coding/CAD. (131 characters)

4.2 Quantify Specific Outcomes

Each description should contain at least 2-3 numbers / specific names:

4.3 Strong Action Verb List (by Category)

Leadership / Creation: Founded, Initiated, Pioneered, Spearheaded, Launched, Established, Co-founded

Management: Managed, Coordinated, Directed, Supervised, Oversaw, Organized

Creation: Developed, Designed, Engineered, Constructed, Programmed, Composed, Authored

Service / Teaching: Mentored, Tutored, Volunteered, Coached, Assisted, Counseled

Research: Investigated, Analyzed, Studied, Experimented, Synthesized, Documented

Competition: Competed, Qualified, Won, Awarded, Selected, Achieved

4.4 Structural Template

Use the same structure for every 150-character entry:

Example:

138 characters, fully presenting 5 facts + quantification.

5. How to Choose Among the 30 Activity Types

Common App provides 30 Activity Type options:

The truth: Category choice is not important. AOs look at the description. But there is one exception: the Family Responsibility category. It signals that you have carried family responsibilities, which can be a plus for first-gen / low-income students.

6. How Should You Fill in Hours per Week + Weeks per Year?

Both fields are numbers. Fill them in honestly. Do not inflate them.

The truth: AOs will not audit your hours, but inflated numbers can be exposed in interviews / recommendation letters. For example, if you write Robotics 20 hr/week x 50 weeks/year, but your physics teacher's recommendation never mentions robotics, the AO will immediately become suspicious.

7. Pairing with the 5 Honors / Awards Section Entries

Below Activities, there is also an Honors Section with 5 entries (100-character description each).

7.1 Division of Labor Between Honors and Activities

7.2 Example of 5 Honors Entries (CS Spike Student)

8. Use the PS / Supplements to Add Details That Cannot Fit into 150 Characters

Details that do not fit into the 150-character Activities description should go into the PS / supplemental essays.

Tactic: At least 2-3 facts mentioned in the 150-character Activities descriptions must be expanded in detail in the PS / supplements, creating a closed loop of "facts + narrative."

9. The 5 Most Common Traps for Taiwanese Students

9.1 Writing Everything as "Member"

"Member of Math Club," "Member of Soccer Team." If all 10 entries say member, the AO sees: "This student has no leadership."

Solution: Even as a member, identify your specific contribution, such as "managed weekly meeting minutes" or "coached underclassmen."

9.2 Turning Camps / Short-Term Projects into Ongoing Activities

A 4-week summer program becomes 8 hr/week x 40 weeks. Inflated numbers will be spotted by AOs.

Solution: Write it honestly as 40 hr/week x 4 weeks. Short-term programs can still be valuable, especially if they are international or selective programs such as Stanford SUMaC or MIT MITES. Even 4 weeks can help.

9.3 Using Too Many Abbreviations or Jargon

"Led MUN to win BD." The AO may not know that BD means Best Delegate.

Solution: Spell out abbreviations the first time they appear: "Led Model UN team to win Best Delegate awards (BD) at 3 regional conferences."

9.4 Descriptions Are Abstract, with No Specific Details

"Helped community," "Made an impact." The AO has no idea what you actually did.

Solution: Replace every abstract phrase with a specific noun + number.

9.5 Repeating Information Across Honors and Activities

Activities says "Founded Robotics, won FIRST Tech regionals" + Honors says "FIRST Tech Regional Winner." This wastes space.

Solution: If an award has already appeared in Activities, do not repeat it in Honors. Use Honors for awards not already covered in Activities.

10. What Do AOs Look for When Scanning Activities in 90 Seconds?

I have interviewed 3 former Yale / Brown AOs. When they read Activities in 90 seconds, this is their sequence:

1. The title of Activity 1 (5 seconds) → identify the spike direction
2. Position field (10 seconds) → look for "Founder / President / Captain"
3. First sentence of the Description (30 seconds) → look for concrete outcomes
4. Total Hours x Weeks (10 seconds) → judge whether you were truly invested
5. Jump to Activities 9-10 (15 seconds) → understand "who this student is" (family, personality)
6. Quick scan of Activities 4-8 (20 seconds) → assess leadership + breadth

The 90-second time allocation tells us:

• Entry 1 + the first sentence of its description = 50% of the impression (it must be your strongest)
• The "human side" in Entries 9-10 = 25% of the impression (do not leave it empty)
• The middle Entries 4-8 = 25% of the impression (breadth and support)

11. The Tension Between Spike and Well-Rounded

For the past 20 years, Ivy League admissions have favored Spike students (one exceptionally strong direction), no longer simply pursuing well-rounded students (broad but not deep).

Conclusion: The top 5 Activities must be spike-focused. The last 5 can add well-rounded breadth.

12. Conclusion: The 10 Entries Are Not a List. They Are a Portrait.

Over the past 15 years, I have seen too many parents treat the Activities Section as a resume list. The result: all 10 entries are solid, but there is no personality.

My final advice to Dr. G. students:

The 10 Activities entries are the material an AO uses to understand you in 90 seconds. Treat them as a portrait. Entries 1-3 are the outline, Entries 4-7 are the texture, and Entries 8-10 are the color. Together, the 10 entries should tell the AO, "This student is X," not "This student has done Y, Z, and W."

After finishing the 10 entries, do one final check: close your eyes and imagine the AO after reading them. Can the AO describe you in one sentence?

"This kid is the CS Spike + Music + Caregiver."

If yes, your Activities are written correctly. If not, delete, reorder, and rebuild.

Further Reading:

• How to Write the 650-Word Common App Personal Statement
• How to Order the 10 Activities Section Entries (Essay Strategy Version)
• How to Write the 5 Honors / Awards Section Entries
• Recommendation Letters: Who to Ask, How to Ask, and How to Follow Up
• Common App vs Coalition vs UC vs Apply Texas