Skip to:

Charter Schools, Special Education Students, And Test-Based Accountability

Opponents often argue that charter schools tend to serve a disproportionately low number of special education students. And, while there may be exceptions and certainly a great deal of variation, that argument is essentially accurate. Regardless of why this is the case (and there is plenty of contentious debate about that), some charter school supporters have acknowledged that it may be a problem insofar as charters are viewed as a large scale alternative to regular public schools.

For example, Robin Lake, writing for the Center for Reinventing Public Education, takes issue with her fellow charter supporters who assert that “we cannot expect every school to be all things to every child.” She argues instead that schools, regardless of their governance structures, should never “send the soft message that kids with significant differences are not welcome,” or treat them as if “they are somebody else’s problem.” Rather, Ms. Lake calls upon charter school operators to take up the banner of serving the most vulnerable and challenging students and “work for systemic special education solutions.”

These are, needless to say, noble thoughts, with which many charter opponents and supporters can agree. Still, there is a somewhat more technocratic but perhaps more actionable issue lurking beneath the surface here: Put simply, until test-based accountability systems in the U.S. are redesigned such that they stop penalizing schools for the students they serve, rather than their effectiveness in serving those students, there will be a rather strong disincentive for charters to focus aggressively on serving special education students. Moreover, whatever accountability disadvantage may be faced by regular public schools that serve higher proportions of special education students pales in comparison with that faced by all schools, charter and regular public, located in higher-poverty areas. In this sense, then, addressing this problem is something that charter supporters and opponents should be doing together.

It is well-established that test-based accountability in the U.S. is dominated by measures that tell you far more about the students a school serves (e.g., proficiency rates) than about schools’ contributions to those students’ progress (e.g., growth model estimates). Even in states and districts that do employ growth models, which are designed to isolate, however approximately, schools’ contributions to their students’ testing progress, status measures such as proficiency rates still dominate overall ratings. And, of course, NCLB is based almost entirely on absolute proficiency, and recent attempts to reauthorize this law appear to be perpetuating this flawed interpretation of testing data.

As a result of the heavy reliance on these (misinterpreted) measures, any schools serving large proportions of traditionally lower-scoring subgroups are at a severe, often fatal disadvantage. And that of course includes special education students. In fact, among the schools that were held accountable for their special education students' testing results under NCLB between 2003 and 2005, over half failed to meet proficiency targets for this subgroup (Davidson et al. 2013). 

Now, to be clear, to whatever degree the fact that charters serve disproportionately fewer special education students is due to deliberate recruitment practices, or so-called “counseling out,” it has to stop. But there is also evidence that this "service gap" may be driven largely by classification, resources/facilities, or simple parental preferences (e.g., Winters 2013).

Regardless of why it occurs, this gap does seem to exist in most places (and it may be even larger if one looks at students with the most severe disabilities), and some charter school supporters are calling on operators to address it. I have no idea if charter schools could be effective in serving this student population if they made more a more concerted effort to do so.

What I do know is the following: Given the (flawed) design of virtually all test-based accountability systems in the U.S., coupled with the enormous “do or die” pressure on urban schools to produce testing results, there is a rather serious disincentive for charters even to try. Testing outcomes are the coin of the realm when it comes to charter schools’ reputations. Any charter school that invests in personnel and facilties to serve special education students, or otherwise focuses actively on increasing their special education student population, risks stigma and failure. This incentive structure may prove a serious obstacle to addressing the special education "service gap."

But our reliance on these inept, unfair, poorly conceived accountability measures has consequences that go way beyond differences in special education populations between charter and regular public schools. Whatever accountability disadvantages may be levied on regular public schools as a result of their serving proportionally more special education students are completely swamped by the accountability disadvantages that all schools in low-income areas, both regular public and charter, face in comparison with schools in more affluent districts.

There is a reason why, according to NCLB and virtually every state-specific school rating system, schools serving more disadvantaged populations are virtually guaranteed to receive low marks: It is due to the dominance of indicators that represent the conflation of student and school performance.

Yet, ironically, charter opponents and supporters are far more likely to use these measures selectively to attack each other than they are to acknowledge that these simple rates aren't telling us much of anything about school performance, and that improving how we measure school performance is actually an area in which the interests of both camps converge. 

Issues Areas


The article makes a number of excellent points (charters serve far fewer special ed students, especially in urban areas and especially students with more severe disabilities; and using proficiency rates is a very flawed way to assess schools impacting poor schools, charter and public alike), but I'm not sure it comes to the right conclusion that we should focus on growth model estimates. Certainly, if used in a non-high stakes manner and done using samples of students (rather than testing every student every year), growth model estimates could provide valuable information about whether particular approaches are effective. The current reality is that testing takes on entirely way too much prominence and the results are routinely corrupted and misinterpreted - by policymakers, district administrators, the media, and others. There is little evidence that shifting to growth model estimates will change this as much as researchers might want them to. The first priority should be to start removing high-stakes and de-emphasizing testing. The other reason simply shifting to growth model estimates is misguided is because we don't need such measures to know that the biggest issue in US ed is equity - not just of schools, but in general. One of the biggest issues with charters is that they're a major distraction from pursuing equity. In fact, many charter proponents proudly say resources don't matter; that we spend too much on ed. I don't think it's a coincidence that inequity has grown at the same time that charter schools continue to serve more students.

As a special education teacher, I've only worked in public settings thus far. I've recently accepted an offer to work at a prominent charter school network in the Southeast. This will be my first year, and while there are less students with IEPs (pre-existing) in the school, that does not discount the fact that several students enter charter schools reading 2 or more grade levels behind. The longer days, weeks, month and school year attribute to student success. See, the issue is, that districts at policy level are refusal to require additional time and work to see the population succeed. Several charters are sacrificing personal time in an attempt to close this achievement gap. It's working.

Add new comment

This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.


This web site and the information contained herein are provided as a service to those who are interested in the work of the Albert Shanker Institute (ASI). ASI makes no warranties, either express or implied, concerning the information contained on or linked from The visitor uses the information provided herein at his/her own risk. ASI, its officers, board members, agents, and employees specifically disclaim any and all liability from damages which may result from the utilization of the information provided herein. The content in the Shanker Blog may not necessarily reflect the views or official policy positions of ASI or any related entity or organization.