HCPSS Student Yield Per House Unit Increasing

There have been discussions on the student yield per house unit, especially the resale yield and new development yield. Please see my other article: https://chaowu.org/2021/05/30/latency-and-disconnect-in-the-new-construction-yield-and-school-over-capacity/ . I have strong opposition to use new development yield to plan for new housing development. There is no need to use two yield numbers as the Howard County Council used before. Just use a moving average number per school level is good enough to project student growth. I believe many families moving into Howard County for better education and we should try our best to provide that education support and maintain that quality.

Based on data collected, originally from Drew Roth, then augmented by Arthur Wang, I computed the student yield per house unit. Thank you, Drew and Arthur. I removed the enrollment data of 2020 and 2021 because of pandemic and only use the data between 2013-2019.

From Figure 1, we could see the trend is clear: HCPSS Student Number per House Unit is increasing over years. There are possible reasons (demographic shift) I can think of right now (a little over simplified):

  1. Newly developed homes have more students per house unit than old homes do.
  2. Senior residents without school age children moving out faster than families with children moved in.
  3. On average, families moving in have more children than families moving out.
Figure 1
Figure 2
Figure 3
Figure 4

The data is attached below:

I would love to hear your feedback and refine my analysis.