That actually sounds blissfully little compared to my 9 yr old twins! They get up to 25 spellings a week (words like "conscientious" this current week) for a Monday test, plus are expected to read every night. they also get one to two subjects per night - eg Physical Science - do an experiment, writie it up and draw a diagram, Geography, History, French, Maths and English.
It usually takes them about an hour to do the main subjects and then more time for the spellings/ reading and they're currently getting - on TOP of all this - revision for pending school exams - eg two English Comprehensions plus finding adjectives - would be one lot of revision.
As a result, they can't do any clubs after school - although they do one at school on Wed and we don't then get home till around 6pm when they have to begin the homework thing. Even I'm exhausted by this and finding it hard to help with Maths homework, especially (see my other thread).
Tonight is an example - DS1 had English revision sheets to do, plus learning several French words - meaning and spellings, plus a science experiment to do and write up and do diagrams. DS2 had English revision sheets(similar), Maths revision of compund fractions and conversions to decimals, percentages, whole numbers, 4 science questiosn to research and answer and French words to learn.
We got home around 4pm and they've worked from about 4.15 pm till 6pm and still haven't finished but are too tired and so are now watching TV....