Learn English – Another word for cute or adorable used as diminutive, sarcasm or condescension

There are lots of diminutive suffixes, but none that mean cute, at least in English. They do impart a sense of affection, though.

• -ie(s) (hottie, sweetie, Petie, cutie, duckie, footsie, elevensies, onesies.
• -y (daddy, doggy, kitty, mommy)
• -sy (Flopsy, Mopsy)
• -ling (duckling, dear-ling)
• -(d)oodle (honeydoodle, canoodle)
• -et/-ette/-etti/-etto/-it/-ita/-ito/-itta (mamacita, amaretto, Manolito)
• -let/-lette (applet, chicklet, piglet)
• -kin(s) (catkin, lambkin, ?pumpkin, honeykins, Sallykins)

I think you're going to have to create something, and I'm afraid it might be rather silly in English.

Xenodoodle is, well, silly, but certainly connotes a feeling that you think the xeno- is cute.

Xenokins? Xenolette? Xenoling?

There is no single word for widespread or organized cheating; if there were, I think it would have appeared in the press by now.

collusion does carry the proper connotation:

secret or illegal cooperation or conspiracy, especially in order to cheat or deceive others; an often secret action taken by two or more parties to achieve an illegal or improper purpose. -AHDEL

Likewise conspiracy (a secret plan by a group to do something unlawful or harmful) can work.

Cheating scandals are not rare enough;

• The 2009 CRCT statistics are overwhelming and allow for no conclusion other than widespread cheating in APS. The BRC expert, Dr. John Fremer, wrote an op-ed article for the AJC in which he said there was widespread, organized cheating in APS. -WSJ
• Governor's Report Details Widespread, Organized Cheating In Atlanta Schools -NPR
• Organized, systematic cheating is the inevitable result of attaching high stakes to standardized tests, and it will continue as long as we're invested in the illusion that the system is working. - Huff Post
• The probe involves about 125 students over cheating on a take-home exam for the course, called Introduction to Congress. Harvard officials called it the biggest such probe in living memory. - Bloomberg.com