Hi I want to say ' the families have a high level of need'. However is it a high level of needs or high level of need. I think its need but am having a debate.
Statistically, 'high level of need' is much more popular, see the comparison diagram (Figure 1). According to my personal experience, 'level of' us normally used to describe uncountable abstract nouns, and it is proved by another statistical plot, see Figure 2.