Why the Workload Approach Matters
The traditional school-based SLP caseload model counts only students on the IEP roster. A 48-student caseload under the headcount model sounds manageable — until you add the evaluations, the IEP meetings, the progress reports, the Medicaid billing, the consultation with general-education teachers, the travel between buildings, the IEP team meetings, the parent phone calls, and the 504 meetings. The Brandel & Loeb (2011) national survey and the ASHA 2024 Schools Survey found that the median school-based SLP spends roughly 40-50 % of the work week on activities that the headcount model does not capture — and that the real-world workload for the median 48-student caseload exceeds the 37.5-hour FTE baseline every week.
The consequence is due-process risk. When the workload exceeds the available time, something has to give — and what typically gives first is the direct service minutes listed on the IEP. The IEP is a legally binding document under IDEA 34 CFR 300.320(a)(7), and the district is obligated to deliver the specified frequency, location, and duration of services. When the SLP is unable to deliver the minutes as written, the district is out of compliance, and the parents have grounds for a due-process complaint. The Workload Approach is the SLP's primary tool for surfacing this gap BEFORE it becomes a due-process issue.
ASHA has recommended the Workload Approach since 2002. The 2002 Workload Analysis Technical Report (ASHA Supplement 22:107-122) is the foundational document. The 2024 ASHA School-Based Service Delivery Practice Portal explicitly reaffirms the Workload Approach and directs school districts to use it as the basis for caseload decisions. Many state school SLP associations — including California Speech-Language-Hearing Association, Speech-Language-Hearing Association of Virginia, and Washington Speech-Language-Hearing Association — have adopted the ASHA Workload Approach as their official caseload-management recommendation. The tool is not new; it has just not been easy to compute in practice. This calculator exists to fix the ease-of-use problem.
The Seven Workload Categories
The ASHA Workload Approach divides the SLP work week into seven categories. The calculator computes weekly hours for each category and sums them to the total weekly workload.
1. Direct student services. Pull-out, push-in, small-group, consultation, or home-visit time with the student. This is the category the traditional headcount caseload model measures. The calculator uses per-tier averages drawn from the published literature (Cirrin 2010, Brandel & Loeb 2011) and multiplies by the student count at each tier.
2. Indirect student services. Data collection during sessions, progress-report writing, SOAP notes, Medicaid billing, lesson planning, materials preparation, goal-progress tracking. The ASHA 2024 Schools Survey found the median SLP spends 25-30 % of the work week on indirect documentation — roughly 10 hours per week for a full-time SLP.
3. Evaluations. Initial evaluations (typically 7 hours each: testing, scoring, report writing, eligibility meeting), triennial re-evaluations (typically 5 hours: data review, selective re-testing, report, meeting), and dismissal evaluations (typically 3 hours: progress review, exit report, meeting). The calculator averages the annual evaluation load across the 36-week school year.
4. Meetings. IEP annual reviews (typically 60 minutes each), IFSP meetings (typically 75 minutes for Part C periodic reviews), 504 plan meetings (typically 45 minutes), and non-IEP parent conferences (typically 30 minutes). The calculator averages the annual meeting load across the school year. Note that meeting time concentrates in the annual-review window (March-May) — plan ahead for the peak weeks.
5. Travel. Time spent traveling between buildings or assignments. Non-reimbursable in most US states but a real line item on the weekly workload. Three or more hours of travel per week is a red flag — advocate for building-assignment consolidation or mileage reimbursement.
6. Supervision. Time spent supervising a clinical-fellowship SLP (CF-SLP), a graduate-student intern, or an SLP assistant (SLPA). ASHA requires the supervising SLP to commit at least 10 % of the clinical fellow's direct-service time to supervision.
7. Professional development. CEU time, district committee time, ASHA convention preparation, mandatory district in-services. Roughly 1-2 hours per week on average for a full-time school-based SLP.
Capacity Thresholds and Actions
The calculator flags the total weekly workload against the 37.5-hour FTE baseline using four thresholds.
Under capacity (< 85 % of FTE). You have headroom for additional referrals, evaluations, consultation, or professional development. Use the unused capacity to reduce the backlog of re-evaluations, to support a struggling general-education classroom with push-in consultation, to pilot a new district-level materials bank, or to take on a CF-SLP supervision assignment.
OK (85-100 % of FTE). This is the ASHA-recommended sustainable operating zone. Continue to monitor the caseload through the school year — case complexity, referral volume, and evaluation load typically increase in the second semester, and what starts as OK in September can drift to at-capacity by March.
At capacity (101-110 % of FTE). You are at the upper edge of the sustainable band. Actions: (1) do not accept new referrals or evaluations without a corresponding reduction elsewhere; (2) notify the building administrator in writing; (3) review the service-delivery model for each student — can any moderate cases move from individual pull-out to small-group pull-out? can any mild cases move to consultation-only? can any severe cases move to push-in co-teaching? (4) review the documentation workload — are SOAP notes, progress reports, and Medicaid billing consuming more than 25-30 % of the work week? if so, streamline templates and build a district-level template bank.
Over capacity (> 110 % of FTE). The caseload exceeds the FTE baseline and the IEP service minutes cannot be delivered as written. Actions: (1) notify the building administrator, the special-education coordinator, and the district SLP lead IN WRITING; (2) request a caseload reduction (reassign students to another SLP, split assignments between two SLPs, hire additional FTE); (3) request a formal service-delivery model change for the affected students; (4) request a formal prior-written-notice (PWN) amendment to the affected IEPs listing the actual deliverable service minutes; (5) document every week the amount by which the actual delivered service minutes fall short of the IEP specification; (6) contact the state school SLP association for escalation advice if the district does not respond within 30 days.
State Caseload Caps
Several US states have explicit statutory or regulatory caseload caps that override building-level pressure. These caps apply to the headcount of students on the IEP roster, not to the workload hours, but they remain the legal ceiling regardless of the Workload Approach computation.
Washington — 53 students (WAC 392-172A-02090; uses a point system for severity weighting). California — 55 students for resource specialist and mild-to-moderate SLP caseloads (California Education Code § 56362). Florida — 55-72 students depending on disability category (State Board Rule 6A-6.03028). New York — 65 students (8 NYCRR § 200.6). Oregon — 40-60 students depending on severity mix (Oregon Administrative Rule 581-015-2220). Michigan — 60 students (Michigan Administrative Rules for Special Education). Massachusetts — no statutory cap but district-level contractual caps commonly in the 40-50 range.
Texas, Virginia, North Carolina, Georgia, Illinois, Ohio, Pennsylvania, and Minnesota — no statewide statutory caps; district-level contractual caps vary widely. In these states the Workload Approach is the primary evidence base for caseload-management conversations with the district.
Even in states with explicit caseload caps, the Workload Approach adds critical information. A school SLP at 45 students in California (below the 55-student statutory cap) can still be over-capacity under the Workload Approach if the case mix is heavy on profound cases, evaluations, and travel. The headcount cap is a ceiling but not a sufficiency condition — use both the headcount and the Workload Approach together to make the full case to the administrator.
