Comparing a child arriving in Tokyo at age 9 is totally different to a 9 year old ending up in a British city. Japan has a reputation as one of the most mono cultural countries in the world. A 9 year old foreign student may well be the only non Japanese student in the school. Most British cities of any size will have schools with children who are multilingual and from different cultural backgrounds. The school is highly likely to employ an ESL teacher and have an ESL policy.
Yes. I know. That's why, in my previous posts, I talked specifically about how the UK has an exceptionally good track record in efficiently integrating children who come in without English or with weak English.
The timeframes I was suggesting were ballpark figures for schools around the world in general, and for what I've seen in international schools here, not for kids coming into Japanese public schools! I'm afraid that most kids with zero Japanese who come in to Japanese public schools at a late agesay,10 or 11 or olderdon't catch up within those time frames because they mostly just drop out and get put in an international school or remote school, once the parents have started to realize things are not working.
If you want some background on EAL and outcomes in the UK, I posted some links earlier, but actually recommend reading this excellent report.
epi.org.uk/wp-content/uploads/2018/02/EAL_Educational-Outcomes_EPI-1.pdf
Please note in particular the following:
The EAL definition describes children who speak another language at home other than English. This includes children who are British citizens who speak another language at home, as well as refugees
and migrants. The heterogeneity of the EAL group makes overall average attainment figures profoundly misleading
(in other words, EAL-as-a-group includes migrants' kids who come when they are 10 but also includes kids who were born here and were bilingual from a very early age.)
Of all the children with EAL in state-funded schools, we estimate that 65 per cent joined a primary school in England in reception year.28 This group have not necessarily arrived in England at this point; many will have been born in England. A further 16 percent are estimated to have arrived in year 1; most but not all will have recently arrived in England. Less than 5 percent of EAL pupils arrived in each of years 2-11.
(ie, only a small % of EAL are coming in at later ages. Most kids defined as EAL in the UK are fluent in English from early ages. So strong performance by EAL kids as a group does not in any way show that "kids are magic sponges and can go to zero to 'fully grade level' within a few months of immersion")
The attainment profile for EAL pupils starting school in England at various ages strongly suggests that it takes longer than three years to become fully proficient in English (see analysis below). This is consistent with research on English learners in California and Canada that found basic oral proficiency takes 3-5 years to develop and full academic proficiency takes 4-7 years, based on populations including those who were present from kindergarten.23 It is also consistent with analysis of proficiency assessment data collected in Lambeth.24
The later kids arrive, the weaker their attainment is by age 16. In fact, the figures suggested by this report are even more cautious than the ballpark figures I suggested.
As the report goes on to describe, kids who are defined as EAL but have been fluent from an early age outperform their monolingual peers at KS2but the opposite is true for kids entering at a later stage, with later arrivals paying progressively heavier penalties. The same is true for secondary school pupils, looking at GCSE results, kids who enter the UK school system in Y7 are doing far better than those who enter later, which again is consistent with what I said about how it generally takes a few years to go from zero to being able to do well at your schoolwork (obviously, it's a bit different if we are talking about a child starting English in Reception at age 4there is far less to catch up on at that age, and some monolingual children will struggle with spoken English when they are 4).