Tuesday, June 17, 2014

Data Analysis Shows No Evidence of Segregative Impact of Charter Schools on Traditional Schools in Hoboken, New Jersey

8th Grade Graduating Class of 1964
Sacred Heart Academy, Hoboken NJ
Recently, there has been a great deal of discussion- often heated-- about the segregative impact of charter schools on the existing public school system. This discussion has taken place at the national, state, and local level in the United States for the last couple of years.

One such discussion is currently taking place in Hoboken, NJ. A small, local charter school recently received approval for renewal as well as expansion of its existing charter. In NJ, charter schools undergo a through review in order to renew their charter every 5 years. In addition to the renewal, Hola requested expansion to the 8th grade from the current K-6 formation. The State of New Jersey approved both requests in early March of this year

For various reasons, the Hoboken Board of Education decided to protest the decision and has subsequently entered into a legal petition/"lawsuit" in order for the renewal and expansion decisions to be revoked. (note: For alleged legal reasons the renewal and expansion decisions have had to be linked and joined according to some members of the Hoboken Board of Education. Interpretations vary.)

One of the primary arguments made by the Hoboken Board of Education is the financial toll charter schools are having on existing, traditional public schools in Hoboken and in New Jersey. This post will not address that issue.  Another main argument is that the charter schools are having a "segregative" impact on the traditional public schools in Hoboken prompting some elected officials to refer to charter schools impact in Hoboken as causing "white flight." This post will attempt to address the segregative issue only and distance itself from any inflammatory rhetoric. 

Various data have been presented on both sides of the issue either supporting or attacking the conjecture of charter schools segregative impact on the traditional public schools in the City of Hoboken, NJ. Unfortunately, most of the data reported has been relatively short term data (1-3 years of data) and little to no attempt has been made to take a more longitudinal examination of the historical low income percentage enrollment in the school district. 

I have been able to obtain from the New Jersey Department of Education/Office of Finance the 1997-2013 "October 15th" Reports or the Application For State School Aid (ASSA). In order to be as consistent as possible, for my analysis I used what is commonly considered the "Line 39" data for FULL ON ROLL as well as RES LOW INCOME to obtain a fair approximation of the percentage of low income students attending the traditional Hoboken Public Schools. This method allows for excellent consistency over the many years of data and gives a good estimate of the proportional percentages.

When this data is plotted we observe an interesting trend-- the percentage of low income students attending the traditional Hoboken Public Schools exhibits a distinct downward trend over the past 16 years. If charter schools were having a segregative effect on the public schools, we would expect to see an upward trend in the percentage of low income students attending the traditional Hoboken Public Schools. I present the data in graphic form for ease of examination. 
Click to Enlarge 
No doubt, this will not be the final word on the topic. That is not the intent of this post. And plotting such data is not the only way to support or disprove the conjecture. But I do think this analysis offers some compelling evidence that the addition of charter schools into Hoboken has not had a tangible segregative impact in terms of low income student enrollment on the traditional public schools. This may be due in large part to historic high low income enrollment in Hoboken's public schools going back many years.  On a related note, it appears that any claim of a possible segregative effect of charters on the traditional public school enrollment in Hoboken NJ has failed to take into account the historical "set point" of the district which appears to be in the neighborhood of about 60.76% low income enrollment with a standard deviation of about 5.52%. There are also a number of city wide demographic trends occurring that may be impacting these percentages-- a general but persistent rise in the average family income over time in Hoboken is certainly proven by census data. Such a trend should be possible to observe over a 15+ year period. Additional analysis with more historical data should be forthcoming. 








6 comments:

Duke said...

Anthony, it's hard to know what you're looking at without having it in front of me. That said...

If you are looking at State Aid requests, and the numbers include resident enrollment, that doesn't tell us much about the enrollment in Hoboken's schools. Resident enrollment includes charter placements and other out-of-district placements. The state calculates aid based on that, not on non-charter enrollment.

Are you sure you've got the right numbers here?

Duke said...

Anthony, it's hard to know what you're looking at without having it in front of me. That said...

If you are looking at State Aid requests, and the numbers include resident enrollment, that doesn't tell us much about the enrollment in Hoboken's schools. Resident enrollment includes charter placements and other out-of-district placements. The state calculates aid based on that, not on non-charter enrollment.

Are you sure you've got the right numbers here?

Dr. Anthony Petrosino said...

Duke- I understand your concern and believe the data is parsed enough to do a general estimate. If you want to discuss further, please email me at: anthony.petrosino@gmail.com
Always willing to make this analysis more accurate and I know this is an area of expertise for you.

Duke said...

But, Anthony, this is the entire crux of your post.

If the numbers you display are showing OVERALL demographic changes in Hoboken -- charter and TPS alike -- that doesn't speak to your case at all. All you're showing, then, is the OVERALL demographic profile of the city.

Really, it's much simpler than this. We know HoLa serves far fewer Free and Reduced Price lunch students as a proportion of their population than the Hoboken Public Schools. This is indisputable -- all the data says so. No one at HoLa can possibly dispute this.

Further, as I have shown repeatedly, even in the most generous reading of the statistics, HoLa's proportion of FRPL kids is about 1/3 that of the total city, including private school placements.

If the OVERALL demographic of Hoboken has changed such that there are fewer kids OVERALL who are in poverty, that's fine. But it has nothing to do with whether HoLa serves fewer FRPL kids than HPS.

Further: even if the FRPL percentage when down in the Hoboken Public Schools over 20 years, that has nothing to do with whether HoLa serves a comparable population. They don't. It's just a fact.

I have a hard time trying to understand why the HoLa community chooses to dispute this. I'd have an easier time making the case the Heat beat the Spurs. You can't change basic facts, and the basic fact is that HoLa serves far fewer kids proportionately in economic disadvantage than HPS.

Dr. Anthony Petrosino said...

Duke- the numbers displayed are not OVERALL demographic changes in Hoboken. This is also not about Hola. My post attempts to present evidence that for various reasons, the traditional Hoboken public schools have had an historically high percentage of low income students attend the districts schools. Attributing a cause (i.e. intentional or unintentional segregation) to this phenomena to charter schools (either individually or collectively) seems to me to be overly simplistic and does not look at the longitudinal data (ASSA reports). My current post take absolutely no position at all on comparable populations of any school or district.

Again, thanks for your comments. I'm in the process of trying to obtain more data to see how far back the trend actually goes.

Dr. Anthony Petrosino said...

Duke- recall the now infamous "white flight" statement made by one of the Hoboken Board members. There was an attribution of the "white flight" of parents from the traditional Hoboken public schools to the charter schools in Hoboken. Additionally, the superintendent made statements claiming segregation. Other people have alluded to racism. All strong words as I'm sure you would agree. My investigation is looking into LONG TERM trends and seeing whether I can find another explanation other than "white flight", segregation, and racism to the conversation. Again, thanks for your interest in this issue. Cheers--