Beatrice, I don't think the SEIS is normed for kids. Mykolas, to my knowledge there is no such test. There are tests for specific age groups and sensitivities, such as Lou Moses' measure of "theory of mind" (if you think that's a useful construct) for preschool kids, which he normed with middle-class North American English speaking kids. Some people have used Baron-Cohen et al's 'eyes' test with kids, but I have very serious reservations about that test (that's a whole 'nother topic). There's also Peter Mundy's ESCS, which is somewhat useful with kids about 18-30 months, but has only moderate reliability and predictive validity. There are others as well, but in all cases that I know of: (a) they test much more specific skills than the set conventionally thought to contribute to EI; (b) they are universally NOT well-validated in different ways (construct, internal, external, differential); (c) they are not developed for different cultural groups. It seems to me that any measure of EI must be adapted methodically for kids or adults in specific cultures, and all items have to be shown to be appropriate (in various ways) for a particular age group. So even across the 10 to 18 year range, there are a number of different emotional skills that are developing during that period, related to different social tasks, and those differ somewhat from (sub)culture to (sub)culture, between genders, etc. You might try the SEIS with that age range, but remember that even the reading comprehension skills of kids at the low end can vary, and should be taken into account.

This scale is adapted in other language. 

Article The psychometric properties of the Schutte Emotional Intelli...

Beatrice, I don't think the SEIS is normed for kids. Mykolas, to my knowledge there is no such test. There are tests for specific age groups and sensitivities, such as Lou Moses' measure of "theory of mind" (if you think that's a useful construct) for preschool kids, which he normed with middle-class North American English speaking kids. Some people have used Baron-Cohen et al's 'eyes' test with kids, but I have very serious reservations about that test (that's a whole 'nother topic). There's also Peter Mundy's ESCS, which is somewhat useful with kids about 18-30 months, but has only moderate reliability and predictive validity. There are others as well, but in all cases that I know of: (a) they test much more specific skills than the set conventionally thought to contribute to EI; (b) they are universally NOT well-validated in different ways (construct, internal, external, differential); (c) they are not developed for different cultural groups. It seems to me that any measure of EI must be adapted methodically for kids or adults in specific cultures, and all items have to be shown to be appropriate (in various ways) for a particular age group. So even across the 10 to 18 year range, there are a number of different emotional skills that are developing during that period, related to different social tasks, and those differ somewhat from (sub)culture to (sub)culture, between genders, etc. You might try the SEIS with that age range, but remember that even the reading comprehension skills of kids at the low end can vary, and should be taken into account.

You are looking for English scale?

Emotional Intelligence and age are related each other. Both cognitive and emotional development are involved, therefore you won't find a performance measure of EI for this stages of life because it is too soon for assessing EI. I'd strongly recommend you to assess first branch (perceiving emotions) using DANVA-2, EMT (it is too long and heavy), or others. I made a Spanish emotional knowledge too. So, I would search an emotional knowledge instrument instead of EI one. However, is you are still interested on assessing EI, I'd recommend you to use the WLEIS (Wong & Long, 2002), which is a short 16-items trait EI scale, which encompasses the four-branches 1997 Mayer and Salovey EI model. If you decide for using it, I would include a verbal intelligence instrument and a personality measure.

MSCEIT-YV is a commercial instrument......

Wojciech, it doesn't matter in what language the scale is.

I'm not sure if you've heard of the Gl Assessment for emotional literacy? http://www.gl-assessment.co.uk/products/emotional-literacy-assessment-and-intervention-0 It is commercial but it is not that expensive and a one off payment to use the resources at leisure afterwards. Not sure if that's any help.

There's also the Emotional Self-Efficacy Scale, which we recently adapted for children.  It isn't strictly an EI measure (either trait or ability), but it's worth looking at.  You can view the paper at my Researchgate frontpage.

I know you said you were looking for a measure of ability EI, so you might be better to look at each domain separately and find established measures of emotion perception, emotion regulation, etc.  There are lots of those kinds of tests and many are free - it's simply a case that one-one has brought these tests together to create a toolkit to fit under the umbrella of EI.  Hope this answer is helpful. Pamela.