House of the Scorpion by Nancy Farmer
Teen SF Farmer
In a future where humans despise clones, Matt enjoys special status as the clone of El Patron, the 142-year-old leader of a corrupt drug empire nestled between the United States and Mexico.
Enchantress from the Stars by Sylvia Engdahl
Teen SF Engdahl
When young Elana unexpectedly joins an expedition to study the planet Andrecia, she becomes an integral part of an adventure involving 3 very different civilizations.
The Stars My Destination by Alfred Bester
Teen SF Bester
Marooned in outer space after an attack on his ship, Gulliver Foyle lives to revenge himself on the crew of a rescue vessel that left him to day.
Focus by Sallie Lowenstein
Teen SF Lowenstein
In the future, all must choose their profession early and then be genetically augmented - a process that increases their ability in their career but lets all other talents wither away. When Andrew refuses to choose, his family tries to support his decision.