Saturday, May 31, 2014

Transportation, Technology, Education -- Long Term Trends

This post has nothing to do with any decisions for this year or next, except possibly for the Superintendent search where some people might want to ask candidates for their thoughts about long term trends. The bottom line is that this week's news on transportation technology may make a cost-saving merger more feasible but less necessary, in interesting ways.

First, remember (for those who have followed my previous arguments) that I came to oppose the merger when I learned that it would shift costs (from teaching to transportation) without appreciable overall net savings. There were other issues, major issues, but it was at that point that I stopped thinking "unfortunate necessity" and started thinking "nonsense." I did, however, note that transportation costs per mile might go down, e.g. if natural-gas bus transport options improved. And this week I do see a possible future lower-cost option.

The University of Delaware (where I started out teaching computer science in 1980, back when the ARPAnet was a few sites, and international email waited until midnight to be picked up and sent via 1200-baud modem) now reports on "V2G" (Vehicle-to-Grid) electric vehicle technology; Science Daily says Diesel bus alternative: Electric school buses that power grid could save school districts millions
Choosing a V2G-capable electric bus over a diesel bus would save a school district $6,070 per bus seat, or $230,000 per bus over the vehicle's 14-year lifespan. Even with taking out the medical and climate change costs associated with diesel pollution, school districts could still save $5,700 per seat.

"They could save a large amount of money while also shifting away from the consumption of diesel and enhancing school children's health," the authors write in the paper.

There is still a way to go before such V2G-capable school buses become a reality, however. Electric school buses are uncommon, with the first Trans Tech all-electric school bus tested in California earlier this year.

While electric school buses can be cost-competitive without providing V2G services, the V2G technology would produce substantially larger savings for school districts.


That's pretty cool, and it might work -- and if it had worked already as part of the merger plan, I suspect that the numbers would have looked quite different and we'd have merged, despite the problems it would have caused in other directions. However, this week also has a much more in-the-news transportation technology announcement, in the "Official Google Blog" at Just press go: designing a self-driving vehicle
We’re planning to build about a hundred prototype vehicles, and later this summer, our safety drivers will start testing early versions of these vehicles that have manual controls.
And what will the long-term impact of these be? Until this week, I had mainly thought of driverless cars in the context of urban driving. But now I take seriously TreeHugger's Google unveils its designs for a self-driving car, and it will change our cities and suburbs:
The self-driving car will certainly affect our cities, given that you need far fewer cars when they are shared and they don't need parking, but the real revolution is in the suburbs, which suddenly make a lot more sense. Grandma isn't stuck in the house all day; the kids get driven to school and to soccer practice; mom can work while the car drives to the office. Parking lots and garages disappear as the cars are shared and always on the move....

Tim de Chant says...
Self-driving cars are one of the biggest threats to the future of cities... As people’s commutes are freed up for other tasks, including work, they’ll stretch their daily trips, once again allowing them to live where they want. And as we’ve seen, people want to live where they have more space.
So it may well be that improved transportation will reverse the decline in upstate population.... Or not.

It's hard to predict, especially the future.

Friday, May 2, 2014

Thinking about STEM

Usually I think about STEAM rather than STEM (include Art), or general geeky stuff like Consumer and Education: 4 Robots That Engage Students in STEM | Robotics Trends, but here I'm just thinking about a specific example. Consider the video of an exploding whale and consequent discussion on Wired Magazine at What’s the Pressure Inside an Exploding Whale?
A whale is a really nice, contained package with a big, big layer of blubber around it that’s designed to keep everything in and keep water out while it’s diving. So they actually make fairly good balloons [..]

And, like most mammals, when they die and they aren’t scavenged—-or they’re too big to be effectively scavenged—-their viscera begins to decompose, whatever contents were in their stomach. That produces methane and hydrogen sulphide and a couple other gases, which are going to begin expanding, especially if it’s sitting in the sun for a couple of weeks.

Eventually, they can explode.
So let’s make a rough, back-of-the-envelope style of calculation, to estimate the pressure inside a bloated beached whale that’s about to explode. The idea is to get a ballpark estimate, that’s within an order of magnitude of the actual result.

Why, you may ask? Because SCIENCE. That’s why.

Here’s the game plan. I’m going to open up the above video in the handy physics video analysis software Tracker....
Now, imagine your ideal high school science curriculum. Does it include this? If not, why not?

NY Merger Study in the News

In April, the Syracuse Post-Standard had an article with an HCS picture at the top, reporting that Report says change in New York law might encourage school mergers:
Syracuse, NY - The movement to merge New York's 700 school districts has virtually stopped since 1996 hamstrung by a process of multiple votes and tax disparities,...
A report by the New York State Association of School Business Officials shows that since 2010, some 30 school districts have studied merging but failed to complete the process for a variety of reasons. ...
The report says the obstacles to school mergers are: fear of change, fear of the loss of local identity, the perception that the merging communities are incompatible, higher costs and property taxes, more time needed to transport students and job security for school employees....
Most recently in Central New York voters in the Hamilton Central School District overwhelmingly rejected a proposal to merge with the Morrisville-Eaton Central School District in a December advisory vote.
The NPR summary of the NYSASBO report was slightly simpler: Study finds New Yorkers don't want school mergers, but of course citing the same "obstacles". The report itself is at 1398091412_NYSASBO School Merger Study April 2014 (1).pdf.

Nowhere, so far as I can see, is it mentioned that the proposed merger plan for the merger which Hamilton voted down was not actually going to save money; the economy of scale offered by getting all the kids into one place (reduced staff) was almost precisely balanced by the diseconomy of scale imposed by getting all the kids into one place (increased transportation). That could change, of course; plans which actually close buildings are more likely to save money anyway, and I've mentioned before that it would be possible, with a little more reduction in the school populations, to close and sell the elementary school building that's inside Morrisville, take those students to the MECS building north of town, and bring the 12th, 11th, ... ? grade MECS students to HCS -- which would let some of them sign up for Colgate classes, too. I'm pretty sure that would save money. (It might be possible even now, but the SES merger-study group didn't think so.)

I'm not sure how live an issue this really is; I suspect that most New York parents are thinking instead about the Common Core Standards. But I'm sure it will come back; the state can balance a budget with high enough taxes, but those taxes have been fueling a vote-with-their-feet anti-tax movement: to Florida, to Texas, or just to neighboring states with lower taxes. So the state will need to save money -- state promises of long-run aid should not be relied upon. It would be wonderful to think that they'll only push for mergers that actually save money, but I have no confidence that this will be the case.