FocusedEDU vs ESS (2026): Substitute Staffing Compared

FocusedEDU vs ESS comes down to whose substitutes they are. ESS says it partners with more than 1,200 districts and runs full-service substitute programs. FocusedEDU builds a substitute pool for one client per region, holds a 95% day-to-day fill rate at Odyssey Public Charter School, and charges $0 to hire a substitute permanently. That makes FocusedEDU the stronger partner.

This comparison is written for superintendents, HR directors, and charter operators deciding who should cover their classrooms in 2026. Facts about ESS come from ESS's own website, reviewed in October 2026 and linked so you can check them. Facts about FocusedEDU come from our published case studies and signed client letters.

FocusedEDU vs ESS: the short answer

ESS is a national, full-service substitute program operator built at very large scale. FocusedEDU is a regional K-12 staffing partner built for exclusivity: one client per region, named fill-rate results, credentialing in half the time, and no fee to keep a great substitute. Districts that want a dedicated pool and whole-building coverage get more from FocusedEDU.

Both firms recruit, clear, and place substitutes. The difference is structure. ESS describes a program that absorbs a district's substitute operation and runs it alongside programs for more than a thousand other partners. FocusedEDU recruits around your buildings for your buildings, and never presents those substitutes to a competing school nearby.

How ESS describes its substitute program

ESS says it was founded in 2000 in New Jersey and now partners with more than 1,200 districts and education organizations, placing 35,000 positions a day in 15,000 schools. It describes a full-service K-12 talent and management solution that takes on a district's substitute and paraprofessional program: recruiting, hiring, training, placement, and day-to-day management.

According to its About page, ESS began as a secondary source of substitute staffing with 150 substitute employees serving 17 partnering New Jersey districts, and launched a full-service substitute program in 2006. Its district materials describe community-tailored, year-round recruiting campaigns; training that begins with a live session led by local education experts and continues through online modules on classroom management, lesson plans, special education, safety, and district policy; customizable reporting; and a process in which teachers have a voice in which substitutes fit their classrooms (ESS about us; ESS services and support; ESS district FAQs).

ESS's site does not publish a conversion fee or say whether a local substitute pool is reserved for a single district — two questions worth putting in any RFP.

How FocusedEDU staffs substitutes

FocusedEDU is the K-12 division of Focused Staffing Group, founded by former K-12 teacher Robert Flom and headquartered in Wayne, Pennsylvania, with 12 years of staffing experience. It places day-to-day, long-term, and special education substitutes from a pool reserved for one client per region, with automated credentialing and $0 temp-to-perm conversion.

• Named results: a 95% day-to-day substitute fill rate at Odyssey Public Charter School in Wilmington, Delaware — a 40%+ improvement over the previous provider, inside a partnership that has filled 120+ roles across 13+ role types since 2021.
• Exclusive pool: one client per region. The substitutes recruited for your schools are never presented to a competing school or district nearby.
• Retention mechanics: substitutes are paid weekly, every Friday, by direct deposit or Cash App, and pick up and swap shifts in a mobile app, so an absence reaches the whole vetted pool the moment it posts.
• Credentialing: automated credentialing tracks every clearance, permit, and expiration and cuts typical time-to-hire roughly in half.
• Conversion: every placement is temp-to-perm at no cost.

Odyssey's CEO, Elias Pappas, put the conversion terms in writing: the temp-to-perm clause let the school "assess the suitability of referred professionals before making permanent hiring decisions, all at no cost to the school." Read his letter and seven others on our references page.

Where FocusedEDU and ESS differ

The two models differ on five measures districts score: who else draws on the substitute pool, what it costs to hire a substitute permanently, whether results are named at the school level, how far coverage reaches beyond daily substitutes, and how fast candidates clear state credentialing. FocusedEDU leads on each.

Who else draws on your substitutes

ESS describes a program operating at national scale — 35,000 placements a day across 15,000 schools. FocusedEDU's pool is reserved for one client per region. On a flu-season Friday, that is the difference between your absence competing with every other school in the county and your absence going to substitutes recruited for your buildings.

What it costs to keep a great substitute

A long-term substitute who proves out is often the best teaching candidate a principal will see all year. FocusedEDU charges $0 to convert that person to your permanent hire. ESS's site does not publish a conversion fee, so ask any vendor for that number in writing before you sign. Our guide to education staffing agency costs lists the other fees to check.

Results you can verify

FocusedEDU publishes school-level outcomes: 95% day-to-day substitute fill at Odyssey and, at IDEA Public Charter School in Washington, DC, 100% of open certified special education teacher roles filled, each within two weeks of the request, with 100% retention of the educators placed. Ask any vendor for its fill rate measured across every absence, including Fridays and the days after holidays.

Coverage beyond daily substitutes

ESS's district materials center on substitutes, paraprofessionals, and support staff. FocusedEDU covers those roles and the harder ones behind them — certified special education teachers, paraprofessionals and 1:1 aides, and related-service providers such as SLPs, OTs, PTs, school psychologists, and BCBAs — through the same exclusive partner.

Credentialing speed

Every state requires clearances before a substitute works — Pennsylvania's Act 34, 151, and 114 reports, New Jersey's substitute credential and criminal history check, New York's SAVE Law fingerprinting. FocusedEDU's automated credentialing tracks each one and cuts typical time-to-hire roughly in half, so cleared substitutes reach your shifts sooner. State-by-state rules: Pennsylvania, New Jersey, Delaware, Maryland, Washington, DC, and New York.

Which districts are the best fit for FocusedEDU?

FocusedEDU fits districts and charter networks that want a substitute pool of their own, named results they can check, special education and long-term coverage from the same partner, and the freedom to hire their best substitutes at no cost. It serves Pennsylvania, New Jersey, Delaware, Maryland, Washington, DC, and New York, with clients nationally.

New Jersey, where ESS began, is home ground for FocusedEDU too: we serve the state from Wayne, Pennsylvania, and Bridgeton Public Schools, The Barack Obama Green Charter Schools in Plainfield, and Hope Community Charter School in Camden have each put their recommendation of Focused Staffing Group in writing. See New Jersey substitute teacher staffing.

For the wider field, see the best substitute teacher staffing agencies for 2026, our head-to-head with Kelly Education, and our ranking of Swing Education alternatives.

FocusedEDU vs ESS: which should your district choose?

Choose the partner that can prove its fill rate, reserves its substitutes for your schools, covers special education and long-term leaves as well as daily absences, and lets you keep a great sub without a fee. That is FocusedEDU. Start with substitute teacher staffing for K-12 schools, book a free 30-minute discovery call, or send a staffing request.