Reception. The drawing on the left also looks like a reception child did it.
Saw and went might have been taught in class at some point. They might even be on display on the wall.
The child might have asked for beach and copied it from the board.
It depends on when the writing was done. Did your child do this at home or at school?
I taught reception, although that was 15 years ago so maybe standards have changed. A lot of children could write like that by the end of reception.