Found a sample of a rubric for EL which we may adapt for assessing the postings by our students. Score of 0-5 were assigned to the following domains:
1. Regularity
– of posts, how often, the frequency
2. Extra exposure to language
– use of language beyond classroom, through self-reading
3. Reflection
– of things heard/learnt in/outside classroom
4. Organisation and Vocabulary
– of thoughts, of words used (esp new ones)
5. Accuracy
– grammar, typo
[source: Edubloggers Link Feed]