I give the beginning of the year inventory to all students.
After determining placement (I try to limit my number of groups to 3- 4 at the most to make Spelling Tests easier to give.), the students are assigned a group. Each group's materials are color-coded for in-class. I used card stock to copy words and keep them stored in envelopes.
I utilize Daily 5 (more of a Daily 3 with 5 components) and each day the students have a word work assignment using their wtw list.
Students have tic-tac-toe choice board for spelling homework involving words- practice independently mon-thurs.
Monday I meet with each group and discuss spelling pattern/ perform initial instruction. We have a check-in day 2 and quick review.
Spelling tests given on Friday. I try to pull one group during morning work, if possible. Usually I just give 3 Spelling Tests during Writing block while other students are working on Writing paper or other assignment.
It took a little bit to get used to routine, but has really done wonders for students and is not so complicated to me now.
Here is a link that may be helpful:
The teacher is an ELL instructor; however, I have found her information VERY insightful and pertinent to all learners.
Hope this helps!