Usually during the very first lesson for beginners I explain that children in Spanish schools don’t have spelling tests at school in the way that they do in English schools – simply because it’s a very phonetic language & the spelling of words is pretty straighforward. Also because the letters only have one ‘sound’, it makes it pretty predictable.
They do, however, have tests about ‘j’ or ‘g’, ‘y’ or ‘ll’ & ‘v’ or ‘b’ – because they are easy to confuse.
And lots of people do confuse them……. I just saw a facebook conversation between two Spanish people …. one had used ‘aver’ & the other ‘havia’.……. neither of which exist!
Here are some pictures which should help!