2nd Grade
2. Plants and animals have predictable life cycles. As a basis for understanding this concept:
1. Students know that organisms reproduce offspring of their own kind and that the offspring resemble their parents and one another.
2. Students know the sequential stages of life cycles are different for different animals, such as butterflies, frogs, and mice.
3. Students know many characteristics of an organism are inherited from the parents. Some characteristics are caused or influenced by the environment.
4. Students know there is variation among individuals of one kind within a population.
5. Students know light, gravity, touch, or environmental stress can affect the germination, growth, and development of plants.
6. Students know flowers and fruits are associated with reproduction in plants.
3rd grade
Life Sciences
3. Adaptations in physical structure or behavior may improve an organism’s chance for survival. As a basis for understanding this concept:
1. Students know plants and animals have structures that serve different functions in growth, survival, and reproduction.
2. Students know examples of diverse life forms in different environments, such as oceans, deserts, tundra, forests, grasslands, and wetlands.
3. Students know living things cause changes in the environment in which they live: some of these changes are detrimental to the organism or other organisms, and some are beneficial.
4. Students know when the environment changes, some plants and animals survive and reproduce; others die or move to new locations.
5. Students know that some kinds of organisms that once lived on Earth have completely disappeared and that some of those resembled others that are alive today.
Grade Four
2. All organisms need energy and matter to live and grow. As a basis for understanding this concept:
1. Students know plants are the primary source of matter and energy entering most food chains.
2. Students know producers and consumers (herbivores, carnivores, omnivores, and decomposers) are related in food chains and food webs and may compete with each other for resources in an ecosystem.
3. Students know decomposers, including many fungi, insects, and microorganisms, recycle matter from dead plants and animals.
3. Living organisms depend on one another and on their environment for survival. As a basis for understanding this concept:
1. Students know ecosystems can be characterized by their living and nonliving components.
2. Students know that in any particular environment, some kinds of plants and animals survive well, some survive less well, and some cannot survive at all.
3. Students know many plants depend on animals for pollination and seed dispersal, and animals depend on plants for food and shelter.
4. Students know that most microorganisms do not cause disease and that many are beneficial.
Grade Six
Ecology (Life Sciences)
5. Organisms in ecosystems exchange energy and nutrients among themselves and with the environment. As a basis for understanding this concept:
1. Students know energy entering ecosystems as sunlight is transferred by producers into chemical energy through photosynthesis and then from organism to organism through food webs.
2. Students know matter is transferred over time from one organism to others in the food web and between organisms and the physical environment.
3. Students know populations of organisms can be categorized by the functions they serve in an ecosystem.
4. Students know different kinds of organisms may play similar ecological roles in similar biomes.
5. Students know the number and types of organisms an ecosystem can support depends on the resources available and on abiotic factors, such as quantities of light and water, a range of temperatures, and soil composition.
Grade Seven
Genetics
2. A typical cell of any organism contains genetic instructions that specify its traits. Those traits may be modified by environmental influences. As a basis for understanding this concept:
1. Students know the differences between the life cycles and reproduction methods of sexual and asexual organisms.
2. Students know sexual reproduction produces offspring that inherit half their genes from each parent.
3. Students know an inherited trait can be determined by one or more genes.
4. Students know plant and animal cells contain many thousands of different genes and typically have two copies of every gene. The two copies (or alleles) of the gene may or may not be identical, and one may be dominant in determining the phenotype while the other is recessive.
5. Students know DNA (deoxyribonucleic acid) is the genetic material of living organisms and is located in the chromosomes of each cell.
Evolution
3. Biological evolution accounts for the diversity of species developed through gradual processes over many generations. As a basis for understanding this concept:
1. Students know both genetic variation and environmental factors are causes of evolution and diversity of organisms.
2. Students know the reasoning used by Charles Darwin in reaching his conclusion that natural selection is the mechanism of evolution.
3. Students know how independent lines of evidence from geology, fossils, and comparative anatomy provide the bases for the theory of evolution.
4. Students know how to construct a simple branching diagram to classify living groups of organisms by shared derived characteristics and how to expand the diagram to include fossil organisms.
5. Students know that extinction of a species occurs when the environment changes and the adaptive characteristics of a species are insufficient for its survival.
Earth and Life History (Earth Sciences)
4. Evidence from rocks allows us to understand the evolution of life on Earth. As a basis for understanding this concept:
1. Students know Earth processes today are similar to those that occurred in the past and slow geologic processes have large cumulative effects over long periods of time.
2. Students know the history of life on Earth has been disrupted by major catastrophic events, such as major volcanic eruptions or the impacts of asteroids.
3. Students know that the rock cycle includes the formation of new sediment and rocks and that rocks are often found in layers, with the oldest generally on the bottom.
4. Students know that evidence from geologic layers and radioactive dating indicates Earth is approximately 4.6 billion years old and that life on this planet has existed for more than 3 billion years.
5. Students know fossils provide evidence of how life and environmental conditions have changed.
6. Students know how movements of Earth's continental and oceanic plates through time, with associated changes in climate and geographic connections, have affected the past and present distribution of organisms.
7. Students know how to explain significant developments and extinctions of plant and animal life on the geologic time scale.
http://www.cde.ca.gov/be/st/ss/scmain.aspEvolution should be a seamless part of the science curriculum, not a unit that comes up in high school biology and is never related to the rest of the curriculum. I'm hoping that seamlessness was why you don't recall evolution instruction in school, rather than ommision of the concept. In addition, evolution may come up as a tangent to other subjects for example relating the evolution of life on earth to layers of sediment and fossilization in a discussion about Geology or the current theories about the evolution of early man in a unit about human origins in History class.