Just a few thoughts for home-schooling parents as a parent who has had a 12-13 year old daughter out of mainstream school for most of the last 18 months. I appreciate that this won't help everyone (maybe just one person) but hope it brings comfort.

Starting PhD student pro tips:

- Keep a backlog of “small ideas” that you don’t find the time to work on. Soon enough you will be asked to supervise undergrad students in some capacity, and these ideas will be exactly what they need to get started.

- In the first two years worry about learning and getting settled in your research field. In year 3+ you can worry about churning out papers (but that’s much easier of you have a good understanding of the field and its methods).

- Believe your advisor on strategy matters, believe in yourself when it comes to details and results (we have good intuition about what’s interesting and important, but only you know what you have actually done and what it means).

- Talk to other students as often as you can. No, they likely won’t know how to solve the specific issue you are currently having, but over time you will learn more from your colleagues than from your advisor.

- Relatedly, other people (your advisor, other profs, other students, reviewers) are neither idiots nor almighty gods of knowledge. They will have insights, but some of the things they tell you will turn out to be garbage.

My thoughts about Covid in schools-
Our studies are crap. We haven't put appropriate resources into studying this. Merging "in-person school" v "remote school" across the country makes little sense since there's so much heterogeneity in what "in-person school" looks like. 🧵

A teacher in Louisiana in an area with high rates of covid & in-person school, has a class with just 2 students in it. The entire school has 37 students and 12 staff, in a building that can hold hundreds.
Should this school's data be merged with a school that's fully open?

How would merging such disparate data, and everything in-between impact our understanding of Covid in schools? What about when we compare it to the rates in children who are in virtual school?

Things often not considered that should be... Are kids in pods? Are kids doing virtual school in community centers/ churches/ other group settings? Are youth sports or other extracurricular school activities (music, etc) happening in-person. Heterogeneity exist in this group too.

What's asymptomatic testing of children in the community like? We know that children are under-tested, how can we say something is safe if we are NOT TESTING children at the same rate as the rest of the population. We can't embrace the "don't ask (test) don't tell" apprach here.

THREAD on the Ofqual consultation.

The exams situation is a fiasco on top of a debacle. Yes - loads of kids have missed out on schooling. That is bad. Yes - the provision across the system is the most unequal it has been in living memory. That is bad.

The solution proposed by the DfE and Ofqual is to get teachers to submit a grade that they think their students are “performing at”. Here there are a number of problems:

Problem 1: what does “performing at” a grade even mean? An exam grade is comparative - if someone has any particular grade all it tells you is where they are compared to their peers. There is NO SUCH THING as “grade 6 content” or “working at grade 6”.

This is as true in maths, where content is cumulative, as it is in something like English, where examination is much more subjective. If you ask teachers all across the country to grade, you will get substantial variability because objective criteria simply do not exist.

That’s not our fault, it’s not a training need, its not that we don’t know what we’re doing. It’s literally the way the system has been designed. You can’t train someone in a concept that does not exist.

So, I know it's the weekend but if I don't say all this I may burst.

A thread for those who think school days should be extended and holidays shortened to make up for 'lost learning'.

The narrative of 'lost learning' is based on the myth that in-school learning is the be-all-and-end-all for all pupils at all times. It isn't. Not all pupils engage all day in school. Not all pupils complete every task set every day, in school or as part of home learning

Part of a teacher's job, and one that we do hourly, is to assess where pupils are along a progression of learning. When they reach a milestone we challenge and extend, where we think revision and consolidation of previous learning is needed we plan and deliver that.

What we don't do when there is revision and consolidation required is declare that any child's life chances are lost. We seek support in school, at home and when necessary from our colleagues in education and third-sector partners.

When a child misses schooling through illness, family circumstance, war, refugee status, any non-attendance, we don't write off their life chances, we don't make them work longer hours and shorten holidays. We take a holistic approach to the support needed and work to meet that.

a higher and higher % of DMs, emails, etc. to me are from indians asking about their genetics. since there are 700 million indians on the internet. makes sense

i'll be publishing my 6K-word essay in indian genetics https://t.co/ycMGoZh13z

but some general points 1/n

- there's a lot of structure. which means you can look at an indian's genome and get an immediate sense of things and a little digging get's granularity very quickly

eg i guessed @suryasays family's jati after about 15 minutes (he was vague about this and had to ask mom)

- a lot of the variation is not partitioned geographically. very different from europe & china where geography is the dominant predictive variable.

indians have lots of structure which means non-geographical (jati) matter a lot. tamil brahmins more like UPites than other tamils

- the 'india-cline' pioneered by reich patterson is pretty explanatory. on one end you have west eurasian adjacent groups. jatts ppl in the NW and upper caste. and other end something away from them (more toward andamese). dalits, southerners etc.

- some groups are off the cline. that means they are not well modeled by the distribution. e.g.,

* parsies (75% iranian)
* bengalis (5-20% east asian)