Waterloo road - starting to be confusing?

well firstly, i have a few questions to ask but to me its starting to
be all confusing everyone is saying all kinds of rumours saying
grantley will be the new headteacher and stuff and with this waterloo
road reunited with janeece in it and then her being waterloo road? its
all confusing anyway i have a few questions;

will jack rimmer ever return? - he was the best head teacher!!
will andrew return (the deputy in series 1 and 2)
will kim come back and stay.. same with steph
why isnt chlo , mika, brett, donte etc in waterloo road reunited? as
theyve been there since like the beginning? and theyre choosing that
danielle n stuff and bolton he came in series/season 3
and the rumours about karen leaving as headteacher? whos going to be
the next one and whens she leaving and stuff can you basically tell me
whats going to happen because if they are goin to remove characters
whos been there since the beginning like tom, grantley, janeece etc.
ive been watching it since it ever started and my friends have only
been watching it this year as it was getting more known but it use to
be soo good with lizzie, rimmer, kim in etc

god, if i was the director i would have so many good ideas for it :ll
ok ty
LOL sorry im abit confused aswell sort of but i hope it makes sense
it's all these rumours which are annoying me and making it all
confusing which is wrecking waterloo road for me.:( OH
AND ALSO

WHEN WILL WATERLOO ROAD END? LIKE WHEN WILL IT COME TO END like no
more series