Raleigh seems to have fitted their 20 inch bikes with 15 tooth cogs and this makes for some tall gearing...

The Fireball has 20 inch wheels with some fat slicks and I swapped in a 19 tooth cog to go with the 44 tooth chain ring while my other daughter's 20 inch Saffron has a 46:20 so that the girls have a useable gear range and makes 2nd (the most efficient gear on an SA hub) very comfortable.

I put an 18 into the new Twenty which gives it a nice gear range and was low enough to make towing the trailer and the bike fairly easy despite having to deal with some fierce headwinds yesterday...