What percentage of a school budget should go to staffing?

For most schools, staffing accounts for 50-65% of total expenses - it's almost always the largest line item. Spending much above 65% leaves little room for error, so lenders and authorizers look for staffing costs to stay inside that healthy range.

How many years should a school budget project?

Five years is the standard. Most schools don't break even until Year 2 or 3, so a five-year model shows that the school can survive the ramp-up years and reach sustainability - which is exactly what lenders and authorizers need to see.

How do I project first-year enrollment for a new school?

Be conservative. A brand-new school's Year 1 enrollment is almost always lower than hoped, so plan for 60-75% of building capacity, map enrollment by grade cohort, and build in 5-10% annual attrition rather than assuming every enrolled student stays.

How much should a school hold in operating reserves?

Aim for roughly 60 days of operating expenses by Year 2-3 and 90 days by Year 5. Ninety days is the benchmark most advisors and authorizers consider healthy because it lets a school absorb a delayed grant or an enrollment shortfall without cutting programs.

Do I need accounting experience to build a school budget?

No. You don't need a finance degree - you need to think through enrollment, revenue, staffing, expenses, and reserves in a structured order. A guided tool like SchoolStack Budget walks through each step and provides benchmarks for your school type.

What is the most common mistake when building a school budget?

Being too optimistic about enrollment. Because revenue and staffing both depend on it, an inflated enrollment assumption inflates the entire budget. Build a conservative scenario and confirm the school can survive it before relying on the optimistic case.

How to Build a School Budget: A Step-by-Step Guide

Why your school budget matters more than you think

A budget isn't just a spreadsheet exercise. For school founders, it's the document that tells you whether your mission is financially sustainable. It's what lenders and authorizers will use to decide whether to fund you. And it's the tool that helps you sleep at night - because you know what's coming. The good news? You don't need a finance degree to build a solid school budget. You just need to think through a handful of important questions, and then put the numbers together in a way that tells a clear story. If you'd like to start with the numbers right now, our free school budget template turns the building blocks below into a downloadable Excel model in minutes.

The building blocks of a school budget

Every school budget has the same basic structure, regardless of whether you're running a charter, a private school, a microschool, or a tutoring center:

Revenue - How much money is coming in? From tuition, per-pupil funding, grants, donations, and other sources.
Staffing costs - What you pay your people. This is almost always the largest line item.
Operating expenses - Everything else: rent, curriculum, technology, insurance, marketing, and professional services.
Capital expenditures - One-time or large purchases like furniture, equipment, or facility improvements.
Debt service - If you have loans, what are the monthly payments?

Start with enrollment - everything else follows

Your enrollment projection is the single most important assumption in your entire budget. Revenue depends on it. Staffing depends on it. Even your facility choice depends on it. Here's how to think about it: Be honest with yourself. If you're a brand-new school, your Year 1 enrollment will almost certainly be lower than you hope. That's normal. Plan for 60–75% of your building capacity in Year 1, and grow from there. Think in cohorts. If you're opening with K–2 and adding a grade each year, map out exactly how many students you expect in each grade, each year. This gives you a much more accurate picture than a single enrollment number. Consider attrition. Not every student who enrolls will stay. Budget for 5–10% attrition annually, depending on your school type and community.

Revenue: know where every dollar comes from

Once you have enrollment, you can build your revenue model. The key revenue sources for most schools include: Tuition - The most straightforward source. Know your rate, your expected enrollment, and be realistic about collection timing. Not every family pays on time, and some may need financial aid or payment plans. Per-pupil funding (charter schools) - If you're a charter, your state provides a per-pupil allocation. This varies widely by state - from under $7,000 to over $15,000 per student. Know your state's rate and any weighted funding categories. Grants - Federal grants (like Title I or CSP grants), state grants, and private foundation grants can provide significant revenue. But be careful: grant funding is often time-limited and shouldn't be relied on for ongoing operating costs. Donations and fundraising - Many schools supplement revenue with annual fund drives, capital campaigns, or church/parish support. Be conservative in your projections here.

Staffing: your biggest cost and most important investment

For most schools, staffing accounts for 50–65% of total expenses. Getting this right is critical. List every position you need - teachers, assistant teachers, office staff, a principal or director, custodial support, and specialists. Don't forget the founder's salary - if you're working full-time, you need to be compensated. Use realistic salary numbers - Research what schools in your area pay for each role. If you're in a competitive market, underpaying teachers makes it hard to hire and keep good people. Think in FTE - Full-time equivalent. A half-time reading specialist is 0.5 FTE. This helps you compare staffing costs across different configurations. Include benefits - Health insurance, payroll taxes, retirement contributions, and workers' comp can add 20–30% on top of base salaries. Don't skip this.

Operating expenses: the details that matter

After staffing, your operating expenses include everything from rent to paper clips. The major categories to think through:

Facility costs - Rent or mortgage, utilities, maintenance, insurance
Curriculum and instruction - Textbooks, materials, software licenses, assessments
Technology - Devices for students and staff, internet, IT support
Administration - Office supplies, accounting, legal, HR services
Insurance - General liability, property, directors & officers, student accident
Marketing - Website, advertising, open house events, enrollment outreach
Professional development - Training and conferences for staff
Transportation and food - If your school provides these services

The five-year view: why one year isn't enough

Lenders and authorizers want to see a multi-year projection - typically five years. This shows them that your school isn't just viable in Year 1, but that it can grow and sustain itself over time. A five-year model helps you answer critical questions:

When do you break even?
How much cash do you need to get through the lean early years?
What happens if enrollment is 20% lower than projected?
Can you build a reserve fund over time?

Common mistakes to avoid

Being too optimistic about enrollment. This is the most common mistake school founders make. Build in a conservative scenario and make sure you can survive it. Forgetting about cash timing. Revenue doesn't always arrive when you need it. Per-pupil funding may come quarterly. Grants may reimburse after you've already spent the money. Build a cash flow projection, not just a profit/loss statement. Ignoring escalation. Costs go up every year. Rent increases, salary raises, insurance premiums - if your budget stays flat while expenses grow 3–5% annually, you'll have a problem by Year 3. Not building a reserve. Operating reserves are what keep your school alive when something unexpected happens. Aim for 60–90 days of operating expenses by Year 3–5.

You don't have to do this alone

Building a school budget can feel overwhelming, but it doesn't have to be. Tools like SchoolStack Budget walk you through each step, provide benchmarks for your school type, and generate the professional financial documents that lenders and authorizers expect to see. The most important thing is to start. Your numbers will get more refined as you go. And a clear financial plan is one of the most powerful things you can bring to your school's launch.